idk because i heard it was free?
what should i use/u recommend?

None of it is free unless you get super fucking basic stuff.. Like basically demo versions.

Once you decide to upgrade and attempt to use any type of hardware you'll have to pay. I would look into Traktor if you want to spend money.. Anything Serato is insane expensive.

well yeah im trying to learn some things/make sure its what i wanna do before i fully invest

Yeah makes sense. PM me if anything man I'm always open to help/chat about this kind of stuff.