I would like to enter the property market as business venture any advice?

I would like to purchase some cheap property to renovate and sell to see if I can make a profit from it and if so continue to do it as a living.I would like to enter the property market as business venture any advice?
Typically, to buy your first property you will need a Mortgage = this means will need some other source of regular Income ...





So ... ';Don't give up your day job'; ...