How do you remove the rear seat in a 2000 Toyota Solara Convertible?

While not specific to your car, most are the same. Just pull up on the front of the seat. Catches will be released on each side then you can pull forward and the entire seat can be removed. No nuts, no bolts, no fuss. The backrest is usually different and may involve removing some bolts. When in doubt, you can purchase a Haynes or Clymer manual for your car (about $25 but worth it) or download the entire factory service manual from Toyota (about $10 and a super bargain).