PLEASE I AM A NEWBIE I DUNNNO WHAT TO DO
Hi, Welcome. Okay, is a pen drive boot the starting point here? What would you like to achieve? You want to use Linux, fair enough. I'd recommend using a live CD. Easy to do and works like a charm.
Puppy/DSL...older PC? Maybe using this checklist
would help you come to a distro that is more suited to your needs.
Alternatively, have a look here
PS : there was no need to scream
- as with all things Linux: dont panic!