do valor go away when someone is knocked down? anything i should know about valor before playing the class?

Be sure to read the section on valor tokens in the lair of the lyrm rulebook. It outlines some important aspects of their use.

Valor tokens do not go away when a hero is knocked down.

The CRRG may also contain additional info should the rulebook prove insufficient.

i failed to check the crrg, i will start checking that first.