The manual for the A++ is a mess.
First you need an A manual.
Then you insert supplement 29 (makes it A+)
Then you insert supplement 29A (installs 1S1 engines in an A+ w/o using the pwr)
Then you insert supplement 29B (makes it A++)
By now you have a manual 3-4 inches thick with multiple pages with same number and nearly same information
Do not know where you can find one though.