dbFront comes with built in context sensitive help and even the ability to create table specific help for your users.
By design, dbFront should need very little documentation. The primary purpose of dbFront is to hide complexity and delegate all of the real work to your database. So it is likely that many of your questions are actually database related. For database specific documentation, please consult your database vendor or one of the many great Q&A sites on the internet such as dba.stackexchange.com.
That said, our intention is to build a full set of examples showing how to make the best use of your database and dbFront.
If you have a question that is specific to dbFront, then please ask. Ask and watch, the documentation will appear, we promise.