The main source of earning XFUEL is by providing support to the project. Have a look at our careers page to see whether you see yourself as a good fit for one of the roles available. These are updated regularly so if you don't see anything right now be sure to check back.
If you're a content creator or blockchain social influencer then you can also earn XFUEL by taking part in one of our open bounties. Be sure to read the terms and conditions to ensure that you are eligible.