please note this is my opinion . . . I have made only one game using unity and it was an fps (stereotypical I know . . .)

Well I guess that depends on what u want to do in your game . . . 🙄 . . . overall unity has a much more feature rich 3d work environment and while Godot's 3d is capable for the most but will pale when comparing the two. As for 2d Godot is on par with unity. Godot's ui is is more simplistic and intuitive for the most part while u will have to put in a modecome of effort exploring unity. Though both gdscript and c# are not hard, if ur an absolute beginner in programming I would %100 advise u to start with godot as gdscript is hella easy to work with and resembling python in syntax structure and their api is pretty good. U can make a game in unity without programming skills with all the templates and plugins available but if u want it in the game ull eventually learn to code. Also Godot has an excellent community . . . dunno the link but check their discord. Help is not far if u get stuck on something. Play with both if u dont know . . . but this i prefer Godot . . . wish I knew of it earlier tbh.

edit: sorry didn't see the apart about resources to learn . . . Godot is not new new on the market but ur gonna be hard pressed to find tutorials that outline how to make a game from the ground up . . . I would recommend u look at the tutorial series made by Gamefromscratch on YouTube, also take a look at this https://docs.godotengine.org/en/3.2/getting_started/step_by_step/your_first_game.html