Progress ships with E-Docs so you should be able to get your hands on those. They aren't bad but...
There are a number of people running courses on Progress Admin out there, some of whom have books they will sell to you. a man called Dan Foreman writes what is generally regarded as the most authoritative set on the subject.
There's nothing like a quick training course to assist. I would suggest that you contact Progress themselves (or Dan again!).
Lastly may I suggest that you go to
www.peg.com and hang out on the dba list for a while. Generally it is a well regarded list and every type of question on Progress DBA, from Newbie to Expert, will usually get a sensible response.