1.- Visit the network at least once a week. If you can do more than that, it will give you even more benefit.
2.- While visiting the network, I highly recommend you make some sort of blog post. Use the Add Blog Post option located at the top of your member page. You can make it about your business, the types of joint ventures you want to do, talk about your affiliates programs, etc... Just make sure it's a post that gets people educated about you and your business.
3.- While visiting find at least 5 people to add as friends. Comment on their profile, and then add them to your friends list. This is a great way to network and get to know people. Offer to do some kind of integration marketing with them, or do some kind of promotion, or ask if they can help you.
4.- Feel free to make any suggestion to the Network Administrator.