serious answers please! what do i need to know about geometry and algebra 2 to understand the concept of precalculus?

Check the pre-requisites for the course you plan to take. I assume that a good handle on algebra is all you need. Perhaps a very minimal understanding of geometry.
i only got to algebra 1 in highschool due to laziness, but i took my college placement test and got into precalc. i've developed a habit of studying on a daily basis and i've maintained great grades since my first semester of college.

Then you'll do fine. Relax man.
what materials do i need? graphing calculator, graph paper, etc?

A graphing calculator will suffice.
what are some good readings to help me?

I would brush up on your algebra by taking the chapter reviews in any algebra text and reading up on what you get wrong.
thank you very much to those who answer with sincerity, i appreciate it