Forum:Somewhat new to dueling

Ayy, I'm a somewhat new dueler. I've always collected the original Yugioh cards but never really dueled until a year or so ago. I'm starting to get the hang of all the new stuff, such as pendulum monsters, Xyz monsters, and all that, but haven't gotten a complete grasp just yet.

I was at a card store today and was dueling my neighbor with my Monarch deck I purchased a few days ago. Some guy was watching our duel while his friend finished doing something. I was talking and explaining my duel techniques, failing to mention I was new. I was discussing how I process every option, think ahead to what that would do, then evaluate the best options and where I could go from there, making my turns really long. Then he said "yeah, that's typically what you tournament people do." Then mentioned how I was Tier 1 or something like that, couldn't really hear him. What is Tier 1?

How to pendulum monsters work? Why do pendulum monsters go to the extra deck when destroyed? Can I bring them back from the extra deck? What are Tiers? What kind of deck is my Monarch deck? How can I better my playing with it?

Thank you, sorry if these are really newbish questions. -Zac