Hey! The best advice I can give you is to not give up, until you create a whole model. When you see a model finished, you feel like you can create everything and you feel motivated to keep learning. I can't wait to see your Blender posts. I guess you are talking about Andrew's doughnuts. Here I have posted another great youtube channel for tutorials, which you can check out:
https://steemit.com/art/@atrocsy/the-best-3d-modelling-tutorials-for-beginners-blender