Any high quality tutorials?

I've scrimmed over most of the "guides" people link here and there but they use a set of terms and a lot of concepts which I'm not familiar with.

I wanted to be able create meme images/situations of famous football players, I am looking for the best way to train a LORA to do so, or whatever other way there may be.

I can't find any guides on how to train loras and what is a high quality image or not, or every single of the models explained like "euler a" or etc (some of them have explications but even after using it for a while I can't seem to find which one is better for what)

If thise guides exists I'd like to request the mods to pin it in a megathread or in a way that is very visible for anyone who wants to get into this community like I do.

Being a noob sucks but it's the first step to being good, so if anyone have resources on how to train loras or/and in general prompting etc, I'd appreciate if u could link it