Is there no answer to your question in this list, please try out these options:
For general questions see the Pre-Sale Questions & Answers.
All settings/options for the installed extensions have tooltips that explain what that setting is for. That should give you enough information to know how to use it.
Google is your friend! If you have some problem, get an error, have a question, try out Google. It usually gives you enough feedback to find an answer.
For more specific questions or feedback, please use the Support Forum.
For extension support you will need a valid subscription.
For Bug Reports and Pre-Sale questions you do not need a subscription.