Here is a small list of Do's and Dont's when setting up your small business. This is by no means a comprehensive list and you'll want to be adding to this list as you learn more however this is a great place to start.
"Do's & Don't-s" - just a few each.

DO set up your business properly. That is legally with all the right licenses, taxes and fees.

DO set up the correct business structure for your business to obtain proper business tax advantages and lower personal liability.

DO be professional in your business and make sure your "no" means "no" and your "yes" means "yes." 

DON'T operate without liability insurance. Cold hard fact one out of every four businesses get sued. Protect your proverbial assets.

DON'T forget dogs bite. Think about it...Say you have a dog walking business...The dogs may bite you and they may bite strangers when you walk them. Who is ultimately at fault here? Make sure that is in your contractual agreement.

DON'T hire friends to cover for you unless they are ...