Local Apartment House Association can help keep you out of trouble with up to date forms tailored for your area.
I've recommended Leigh Robinson's book Landlording to new owners...
It is simple to follow, lays out basic principals to be a successful rental operator.
Simply things... like if you have to choose to personally work on your rental or home... you should work on your home and hire out the job for your rental because your money ahead after deducting repairs from rental income.
Here's the link for the 11th edition...
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In the interest of full disclosure, I met Leigh through the local apartment house association years ago... no other connection.