Have you forgotten everything you learned in that Government class you took your senior year of high school? Don't remember anything from your Civics course back in 1961? Ashamed that you haven't voted or kept informed all these years! This is a NO SHAME website, where you can find the answers to all sorts of questions about how government works. If there's something we don't cover here, contact us at email@example.com, and we'll see about adding it.
Ballotpedia - a wonderful non-partisan, not-for-profit site that explains a lot - explore the whole site, but especially the left-hand column.