You may have seen the "Badges" menu at the top of the forum?
You can earn badges by updating your profile with a photo, and by answering questions and voting on posts and replies. Look at the bottom of each post, and you'll see clickable icons to like, down-vote, and favorite:
By participating in voting you help others as good stuff gets promoted and not so good stuff gets pushed down.
Try answering a few questions also. This activity helps boost your own ranking, which is essentially a measure of your credibility on the Community.
Use simulation, help others, have fun.
If someone gets to 500 or 1000 points I'll up the game on the prize. These users will receive some ANSYS Academic Research software for their Professor/school/department.