There are lots of ways to get support. The following is a list you should probably work through from the top until your problem is solved.
The Documentation section has lots of information which may already provide answers to your problems.
We have a forum available for you to ask questions.
Use our GitHub Issues to report bugs you have found (or be told that what you’ve found is actually a feature). Please provide a reduced example that reproduces the bug to give us a chance to find out where things are going wrong.
We have a developer mailing list which we use to discuss development. Feel free to sign up to that list to keep track of what we’re doing and to comment on plans we announce there.
We have a whole section in our documentation to help you get started!