I need recommendations for a tutorial

I have a basic understanding of Bubble. I can usually follow tutorials and deviate a bit and it still works. Right now I’m trying to do something mostly on my own and I keep getting stuck. Something will work and I’ll change one thing and then nothing will work. I need recommendations for a tutorial that will go in depth and beyond the basics. I am thinking of the boot camp course on Udemy from Gregory John. Does anyone else have a recommendation for me?

Definitely the bootcamp course from Gregory John. Also his site https://buildcamp.io/ contains a lot of good content. This Youtube channel also contains good content.

Thank you