I'm learning Beethoven's Minuet in G Major, and above measure 32 (I think), it says TRIO. what do i do? (it is a piano solo)

Better you ask your classical teachers. they will know the meaning..

The best way to find out is to look it up

Beethoven and others classical/romantic composers would write Minuets to be followed immediately by a Trio, which is then followed by a recapitulation of the minuet. In this case, the "Trio" means that there are 3 separate voices playing; in the original orchestral minuet, every instrument in the orchestra would be playing the part of one of these three voices. It just means that you'll be playing 3 separate lines at once on the piano, nothing more.

The last post explained it perfectly. I will just add Minuet/Trio is a FORM of music

Thst's great there are users ready to help on this site, I think I'm going ask lots of questions on my own. Because learning how to play viola I have lots of them!