Mostly door to door, as soon as you have a couple done on the same street, then the work sells it self, people pass with their car and ask you for a quote for their driveway, then you just need to go close the sell.
A good entry level would be just those bottles of cold crack filler, they will do the job. Once you've save up enough money, you can buy a hot kettle melter, they go from 800-1600$, lots of company sell them. Basically melts rubber for you to apply in the cracks, much better quality.
Gauvreau Property Maintenance
Commercial & Residential asphalt services
Interlock & Landscape
Complete lawn care services