Your best bet is to start with some flyers. Low investment and usally a decent return. As for how much time before you start to make decent money depends on a few things. First being what you consider decent, if you plan to turn a $1000 a week profit in a month then you're fooling yourself but if you plan on making $200-$500 a week within your first quarter then you're on the right path and you'll be in good shape. Remember that you need to work your way up in the detailing field this may mean doing some cars you would prefer not to do, check with some small local car dealers you won't get great money but it should be steady which will help you build up your clientel. When you do these types of cars remember you're building your reputation so do your best regardless of the condition or price.Also make sure you place your card in the finished car this will help get private party work. In time you'll be able to move away from such work. Hope this info helps
Doug Lucas
The Detail Barn