Let me just start off by welcoming you to the clan and well I'm no good at this introduction thing so I'll just go ahead and answer your questions (and or telling you what stuff is)....so yea :]
Okay, for beginners the creepypasta wiki (found here:
Creepypasta Wiki) is home to several (if not all) stories related to paranormal and or down right freaky. You can simply browse through it and search story you want. Same goes with the official website
Official Creepypasta siteSome suggestions for reads:
The Rake
Russian Sleep Experiment
Doors
The Thing That Stalks The Fields
Smile Dog
Eyeless Jack
Emma
I've also heard that the Holder series is pretty decent too
Hope to some degree this helps out [: