OK, go to
Beginner Program - Student materials - Play Pickleball-B Forever Young for information about pickleball. Some places might be lacking players due to summer months, Mulberry recently added beginner play times, so between summer (heat by 10am) time slot just added may have fewer players. If you played racket sports (tennis, racquetball, table tennis, badminton, ect...) can usually pick up pickleball quickly.
Main thing in doubles is knowing were to stand and not to stand, and how to keep track of score. Position play will come in time. I play at Mulberry couple times week. I can give you some pointers if you want when I'm not busy with other activities. PM me and maybe can set of time to practice some. I live close.