Sometimes I go on a deep google dive and find some interesting stuff. That stuff then ends up sitting as open links, because I'd like to post about it, but forget to do it.
I'm still having trouble getting inkscape to load properly on my mac, however I'm fairly comfy with gimp and hand drawing stuff.
Without further ado, here's some good mapping tutorials and techniques.
Link to pdf tutorial https://www.cartographersguild.com/showthread.php?t=15185
https://alexschroeder.ch/wiki/Old_School_Hex_Map_Tutorial hex map extension for inkscape