I'm new here

[MikeMcCl]

I just bought my first vehicle and it is a 1972 Chevy C10 Deluxe long bed with a 350/4 bbl carb and a 4-speed manual. I never realized how big of a community there was for C10's until I actually bought one. I've seen a lot of phrases be thrown around such as "static drop" and "3"/5" drop." I sort of understand these terms, but I'm still learning.
With me being in high school still and making a little bit more than minimum wage, I'm curious to know what modifications I should do first and how I should lower it.
Please help!