Help with world generation?

[Peepo]

Hey there, I'm interested in getting into making my own custom world generators or modifying the existing default one. But there seem to be a lot of different tutorials and resources and I'm not sure which ones are current/relevant (im looking at messing with MC version 1.15.2 and up). Could I get some pointers on what to start with?

 

[Cptqrk]

Have you looked at https://cadiboo.github.io/tutorials/1.15.1/forge/ ?

Basic MC 1.15.2 forge modding info there, should be able to glean some info from there.