The fastest way to get oriented is to browse open challenges from the Discover page and join one that matches your interests — most challenges are open to join right up until their submission deadline, and joining is a single click.
Once you're in, the challenge's Overview tab explains what's being asked for, the Submission tab is where you build and submit your entry, and Updates is where the creator posts announcements. If a challenge asks you to form or join a team first, that happens from the Team tab before you can submit.
If you'd rather create a challenge than join one, the "Create a Challenge" button walks you through a short wizard — see the Challenge Creation category for the full walkthrough.
