[QUOTE= I should also order a rebuild kit and a book. Any suggestions?[/QUOTE]
I would use Youtube as there are some excellent videos on rebuilding.
This guy is one of the best.
https://www.youtube.com/watch?v=mcUo3rDHaLU
You have pressure as it goes into gear and shifts to second. The pressure gauge will not help much. It may give you a clue to why it failed but litttle else.