Tenant Inspection Form I Have A House To Rent, 1st Time, For College Students. Should I Do Month To Month, Lease, Prevent Sublet?

I have a house to rent, 1st time, for college students. Should I do month to month, lease, prevent sublet? - tenant inspection form

Inspections?
It is a chamber 4, 1 passed, and I am loading is treble damages of $ 1150 rent, tenants pay utilities, is near a university campus

How do I protect my house? How can I avoid house "extra strong" tenant? How can I fix this problem, I can just throw? I'm scared! :-)
It's my life-investment, this house.

Should I guarantee for all tenants who are motivated at all to keep good things?
Where can I find online forms?
Can I form a roommate, who says that my son, the tenant, and each (of the other tenants, it's just a roommate I have a legal form), so there are no "rights of tenants?