I'm not big on retaining attorneys for things that I can do on my own. There are online sources you can appeal to i.e. legalzoom.com. Or call Bill Handle, host of Saturday Morning's KFI AM 640's "Handle On The Law" I listen to him often and have even reached out to him a time or two. He gives very good "FREE" legal advice on matters like this. If your to shy tl call a radio station just listen to him any Saturday Morning and I'd bet dollars to donuts that this topic would come up at least once.
As you have been advised, contact an eviction service or attorney. This is a very standardized process, but must be done correctly. Remember you will get what you pay for.
You should get awarded the back rent and eviction fees, assuming you win. But that doesn't guarantee that he will pay.