There are offers that will have survey's for you to complete. Just look for the various offers that look interesting to you. There are options on the top that will let you kind of pick and choose. I would also recommend doing the daily opinions. You don't always get them, but you never know when you will. If you do free trials and don't want to continue don't forget to cancel. Someone had a good suggestion for the trial offers - keep a sheet of paper with the company, contact info and when you have to cancel by. Just so you know though, they will put a temporary hold on your bank account or credit card if you go for them.
I just started in the last 1 1/2 weeks and just reached $25 (which is the amount needed for cashout). I am excited. I am going to wait to cashout until closer to the end of the month to see if I can get a little bit more money.
Hope this is helpful.