Gumroad Tutorial List
There's a ton of great Artists doing gumroad tutorials these days. Here's a list to get started. Feel free to post others that you know of (Some of these fit into multiple categories. I'll do the best I can) and I'll add them.
Ryan Hawkins/VERTEX https://gumroad.com/ryanhawkins
Software
Murry Lancashire https://gumroad.com/muzzface
The CountDown LevelUp https://gumroad.com/l/CountDownLevelUp
Painting
James Gurney https://gumroad.com/gurneyjourney
Natasha Tan https://gumroad.com/natashatan
Randy Gallegos https://gumroad.com/l/gallegos
Pixel Art
Max Gon https://gumroad.com/l/jNoBo
Dominique Hendricks https://gumroad.com/domino99designs
Modeling/Sculpting
Henrique Lopes https://gumroad.com/henriquevlopes
Tito Belgrave https://gumroad.com/tbelgrave
Rafael Grassetti https://gumroad.com/grassetti
David Lesperance https://gumroad.com/metalman123456123
Dominic Qwek https://gumroad.com/dominicqwek
Ben Mauro https://gumroad.com/benmaurodesign
Kirill Chepizhko https://gumroad.com/kirillchepizhko
Bryan Wynia https://gumroad.com/bryanwynia
Kurt Papstein https://gumroad.com/ikameka
Bruce Conners https://gumroad.com/bruceconners
Oleg Vdovenko https://gumroad.com/chuvabak
Frank Tzeng https://gumroad.com/frank_tzeng_art
Mathias Zamęcki https://gumroad.com/mathiaszamecki
Cezar Brandao https://gumroad.com/branduarte
Josh P Crockett https://gumroad.com/monsterfaces
Lance Wilkinson https://gumroad.com/optinium
Jerry Perkins https://gumroad.com/masterxeon1001
Matt Thorup https://gumroad.com/redbeard
Martin Punchev https://gumroad.com/cgzen
Justin Goby Fields https://gumroad.com/ironkladstudios
Peter Zoppi https://gumroad.com/zippzopp
Shane Olson https://gumroad.com/l/shaneolsonCourse01
Dead Panic Studios https://gumroad.com/deadpanic3d
Nick Miller https://gumroad.com/nyx702
Salim Ljabli https://gumroad.com/salimljabli
Isaac Oster https://gumroad.com/isaacoster
Alexander Delagrange https://gumroad.com/l/TqTzB
Katon Callaway https://gumroad.com/katoncallaway
Vaughan Ling https://gumroad.com/vling
Claudio Setti https://gumroad.com/claudiosetti
Carlos Fuentes https://gumroad.com/generalarmament
Dusk Thirteen https://gumroad.com/dusk13
Michael Knowland https://gumroad.com/mknowland
Ryan Kingslien https://gumroad.com/ryankingslien
Philipp Schmidt https://gumroad.com/l/gSRd
Rohan Dalvi https://gumroad.com/rohandalvi
Chung Kan https://gumroad.com/chungkan
Nick Rutledge https://gumroad.com/thekesslereffect
Glauco Longhi https://gumroad.com/glaucolonghi
Jose Cua https://gumroad.com/josecua
Gavin Goulden https://gumroad.com/gavingoulden
Erik Jakobsen https://gumroad.com/erikjakobsen_art
Tarkan Sarim https://gumroad.com/tarkansarim
Jesse Sandifer https://gumroad.com/jessesandifer
Alami Khalil https://gumroad.com/l/modularassets
MaserXeon1001 https://gumroad.com/masterxeon1001
Peter Konig https://gumroad.com/peterkonig
Jeffrey Ian Wilson https://gumroad.com/jeffreyianwilson
Hunter Rosenberg https://gumroad.com/will_grello
Chris Rosewarne https://gumroad.com/chrisrosewarne
Pierre Benjamin https://gumroad.com/artofpierrebenjamin
Warren Marshall https://gumroad.com/warrenmarshall
Tor Frick https://gumroad.com/snefer
Francois Klose https://gumroad.com/francoisk
Mikkel Frandsen https://gumroad.com/mikkelfrandsendesign
Jim Vikström https://gumroad.com/jimvikstrom
linkzelda41 https://gumroad.com/linkzelda41
Yriy Romanyk https://gumroad.com/romanyuk
Dmytrenko Igor https://gumroad.com/klints
Oscar Perez Ayala https://gumroad.com/oscarperezart
Mark Van Haitsma https://gumroad.com/mvhaitsma
Excessive Zero https://gumroad.com/excessivezero
Concept Art
Alexandre Diboine https://gumroad.com/alexandrediboine Cam Sykes https://gumroad.com/l/jdcKB John J. Park https://gumroad.com/jparked Anthony Jones https://gumroad.com/robotpencil Eytan Zana https://gumroad.com/eytanzana Victor Mosquera https://gumroad.com/victormosquera John Sweeney https://gumroad.com/sweeney1987 Darek Zabrocki https://gumroad.com/darekzabrocki Neil Blevins https://gumroad.com/soulburn3d Richard Lyons https://gumroad.com/rlyons Matt Dixon https://gumroad.com/mattdixon Charlie Bowater https://gumroad.com/charliebowater Maciej Kuciara https://gumroad.com/maciejkuciara Eric Ryan https://gumroad.com/ericryan Chino-Rino https://gumroad.com/chinorinovislab Andrey Ryabovichev https://gumroad.com/riabovitchev Jonas De Ro https://gumroad.com/jonasdero Nick Gindraux https://gumroad.com/ngindraux Dan Luvisi https://gumroad.com/danluvisiart James Zapata https://gumroad.com/jameszapata Jan Urschel https://gumroad.com/janurschel Jason Scheier https://gumroad.com/jscheier Dave Rapoza https://gumroad.com/daverapoza James Paick https://gumroad.com/jamespaick David Lojaya https://gumroad.com/davidlojaya Nick Hiatt https://gumroad.com/nickhiatt Emily Hare https://gumroad.com/wavingmonster Tyler Edlin https://gumroad.com/l/BhyY Jama Jurabaev https://gumroad.com/jamajurabaev Michal Kus https://gumroad.com/michalkus Frank Hong https://gumroad.com/frankhong Marco Nelor https://gumroad.com/marconelor Alex Ruiz https://gumroad.com/alexruizart Paul Kwon https://gumroad.com/zeronispk Espen Olsen Sætervik https://gumroad.com/espenartman David Levy https://gumroad.com/vyle Konstantin Maystrenko https://gumroad.com/zoonoid Daniel Jin Suk Park https://gumroad.com/danielpark Paul Scott Canavan https://gumroad.com/abigbat Kalen Chock https://gumroad.com/k04sk Mark Molnar https://gumroad.com/markmolnar Natasha Tan https://gumroad.com/natashatan Marek Okon https://gumroad.com/marekokon Adam Duff https://gumroad.com/adamator Trent Kaniuga https://gumroad.com/trentk Trevor Claxton https://gumroad.com/l/Gaki Rad Sechrist https://gumroad.com/radsechrist Alex Negrea https://gumroad.com/alexnegrea Michael Yamada and Victoria Ying https://gumroad.com/eca David Colman https://gumroad.com/davidsdoodles Glenn Rane https://gumroad.com/glennrane Chris Legaspi https://gumroad.com/chrislegaspi Tony Leonard https://gumroad.com/tonikoro Yohann Schepacz https://gumroad.com/oxanstudio Jason Seiler https://gumroad.com/jasonseiler Mike 'Daarken' Lim https://gumroad.com/daarken Brainstorm School https://gumroad.com/brainstormschool Johannes Voss https://gumroad.com/l/KaCW longpham https://gumroad.com/longpham One Pixel Brush https://gumroad.com/onepixelbrush Mike Azevedo https://gumroad.com/mikeazevedo Titus Lunter https://gumroad.com/tituslunter Redhead Robot https://gumroad.com/redheadrobot Melanie Maier https://gumroad.com/melaniemaier Miles Johnston https://gumroad.com/milesjohnston David Ferreira https://gumroad.com/david_ferreira Lu Dongjun https://gumroad.com/ludongjun Izzy https://gumroad.com/cannibalcandy Alexey Grishin https://gumroad.com/sephirothart Chris Rosewarne https://gumroad.com/chrisrosewarne Justin Pichetrungsi https://gumroad.com/l/jrungsi Matthew Zikry https://gumroad.com/l/perspective Serg Souleiman https://gumroad.com/artofserg Mike Hill https://gumroad.com/mikehill Sakimi Chan https://gumroad.com/sakimichan John Wallin Liberto https://gumroad.com/johnliberto Noah Bradley https://gumroad.com/l/thedesperatelamentations Brandon Liao https://gumroad.com/epicloot/ Camila Vielmond https://gumroad.com/vielmond Yuri Shwedoff https://gumroad.com/yurishwedoff Adrian Majkrzak https://gumroad.com/ghostorbit Edon Guraziu https://gumroad.com/edonguraziu Foundation Patreon https://gumroad.com/foundation_patreon Jomaro Kindred https://gumroad.com/kindredconcepts Lorin Wood https://gumroad.com/lwoodesign_gum Marius Bota https://gumroad.com/botamarius Roger Adams https://gumroad.com/rogeradams Timothy Rodriguez https://gumroad.com/timo Marcel Domke https://gumroad.com/marceldomke Devin Platts https://gumroad.com/devinplatts# Tony Leonard https://gumroad.com/tonikoro Wanja Svasek https://gumroad.com/l/FSP_Primitives
Sketchbooks/Books: Will Terrell https://gumroad.com/willterrell Clint Cearley https://gumroad.com/l/SDra Brett Bean https://gumroad.com/2dbean Tally Marks https://gumroad.com/l/SMtyJ Mike Corriero https://gumroad.com/mikecorriero# Chris E. O'Neill https://gumroad.com/thumbsoneill Natalie Nourigat https://gumroad.com/tallychyck Omar Doğan https://gumroad.com/omardogan Mark Molnar https://gumroad.com/markmolnar Stéphane Richard https://gumroad.com/wootha
Photoshop Brushes: Kyle T Webster https://gumroad.com/kyletwebster Maxim Verehin https://gumroad.com/verehin Shiyoon https://gumroad.com/l/shiyoonink Louis Van Driessche https://gumroad.com/lewisflakes Igor Vitkovskiy SHIA BRUSHES!! DO IT! https://gumroad.com/artistmef
Clip Paint & Manga Studio Brushes: Paolo Limoncelli https://gumroad.com/uxds
Materials/Texturing: Ben Nadler https://gumroad.com/bennadler Kelvin Tan https://gumroad.com/turpedo Paweł Łyczkowski https://gumroad.com/plyczkowski Hiten Mistry https://gumroad.com/mistryhiten Jerod Bogh https://gumroad.com/jerodbogh Yuri Alexander https://gumroad.com/ysalex Joost Vanhouette https://gumroad.com/joost Zeno Pelgrims https://gumroad.com/zenopelgrims Ann Batte https://gumroad.com/texturing_resources Christophe Desse https://gumroad.com/xtrm3d Thiago Vidotto https://gumroad.com/tvidotto Juan Jimenez https://gumroad.com/factor3d Tim Bergholz https://gumroad.com/timb
ZBrush Brushes: Jonas Ronnegard https://gumroad.com/environmentdesign Gerardo Castellanos https://gumroad.com/gerardocastellanos Michael Dunnam: https://gumroad.com/mdunnam
Image Reference Packs: Alexander House https://gumroad.com/argh0use ProREF https://gumroad.com/prorefs Renee Robyn https://gumroad.com/reneerobynphoto Tom Lopez https://gumroad.com/tomlopez Travis Davids https://gumroad.com/mrdavids1 Andrew Wing Simpson https://gumroad.com/andrewwing Mathilde Calon https://gumroad.com/perzik Hector Mateo https://gumroad.com/hectormateo Little Pink Pebble https://gumroad.com/littlepinkpebble HexDraws https://gumroad.com/hexdraws Chris Stone https://gumroad.com/beefaroni
Assets: Jimmy Livefjord https://gumroad.com/handpaintedtextures unforgiven https://gumroad.com/unforgiven