Take a month's deposit, always get the rent paid in advance, take pictures of the place before the tenants move in, preferably get a written contract, register with the PTRB, be fair with the tenants, don't expect to get the place back in the same condition you rent it out as, don't be surprised if decent looking tenants turn out to be really messy, get the rent paid by standing order / direct debit, visit the premises regularly especially in the first few weeks after they ave moved in, tell them to be respectful of the neighbours, if you get good tenants do your very best to hold onto them because they aren't too easy to find.