I agree - I find QuickFile quite simple to use yet effective. The best way to do it is play about. Even now I have a test account (used for playing with new features without messing up my account, testing the API, and answering forum questions).
As @PeterK suggested - play with the features, and then simply wipe your account clean and use it for real 
And, there’s an active forum here with people who are happy to answer questions (but do use the search first)