Read Tamu and Swimom's threads on E.D.
There are many more threads and posters on this topic but I can't recall who started which thread.
Scroll down to the third or fourth post on the "....Helpful Hints" thread at the top of this page.
Our Moderators (Bluebird and Idaho) keep informative threads indexed there by topic.
Just point and click....
The main thing I point out is that most patients don't get usable erections without PDE5's (like Viagra), Vacuum Pumps, and/or injections until one to two years have gone by
Using these things statistically improves the time required to achieve erection function.
They also provide therapy to the tissues in the meantime as nerves heal and trauma subsides. Most of what I read suggests you create an erection one way or another once a week until your function returns. It prevents peyronies and stimulates both tissues and nerves.
I also read that those who use injections get their function back, as a rule, sooner than those just using pumps and PDE5's.
Best wishes and warm regards.