So I have 2 questions:
1.
Is DECORATE the first thing I should learn to do for Doom modding, or should I learning something else first?
2.
Is thare anything like a Beginner Guide to DECORATE, that explains what walks you through making different stuffs?
Hopefully something I can use offline, so I do not have to bother you guys every time I have a simple question or problem

Also, I see people talking about how modders do not use PK3 properly, and that makes inefficient archive? Where would I go to learn to do it right?
Apologies if this is not the right section, I thought that a Guide to DECORATE would be a type of Resource.