A list from @mxhelianthe the Awesome! (I've been playing Diablo 2 if you can't tell by my naming scheme)
Beginner oriented tutorials and playlists:
https://www.youtube.com/watch?v=-VFOwJXpQi8&list=PLNCitZ2dgQpYWbMdT6ai5Z4apg7_ShydQ a useful gdscript guide for beginner not only in godot but in coding. This youtube channel also has misc tutorials on godot that are very useful
https://www.youtube.com/playlist?list=PL_0MSWatB8PSc4ALUviAKgZHlNdN361tM Born CG's full 2d beginner course that covers everything you'll need to create a game (including stuff like UI, sound management and saving your project on itch io)
https://www.youtube.com/watch?v=itKLmCwGeNs&list=PLJ690cxlZTgL4i3sjTPRQTyrJ5TTkYJ2_ Very complete gdscript fundamental series from Godot Tutorials.
This channel also has a Godot Basics course that is equally detailed : https://www.youtube.com/playlist?list=PLJ690cxlZTgIsmdEhFufnB7O6KWoMS8M6
Misc: One that is a bit less beginner oriented, Tutemic's 7 hours video on godot 3D and code architecture: https://youtu.be/yRHN_WEulLc
https://www.youtube.com/playlist?list=PLImQaTpSAdsD88wprTConznD1OY1EfK_V This is a crash course in mathematics that you'll need in gamedev. If you're going 2D for the game jam, you mostly won't need it. But you'll get stuck in 3D really fast if you don't understand these concepts. This covers most common and useful maths you'll face in gamedev and is designed for people that are not experts in maths