ProConnect works well, but it does take time to figure the program out. Try spending some time with a few training videos in one screen, with the program in another window. https://www.youtube.com/results?search_query=proconnect+tax+online+training

The move will likely NOT involve using the dollars you paid ProConnect being transferred to ProSeries. You can create dummy tax returns to practice on. As long as you DO NOT print or e-file the return, it does not use any of your REP credits. 

Good Luck