How should I start Computer Repair/IT Support business from home?

I am a recent college grad that has experience working as a lab tech at my former college, along with years of experience building and repairing computers. I am also in the process of my CompTIA A+ and N+ certification. Since I’m having a hard time finding work a lot of people suggested to me to start a simple computer repair or maintenance business from home. I would love some advice about this.

Do I need a business licenses? What type of paper work should I prepare? How should I arrange the invoice and what to include? Should i include my apartment address or will that be unprofessional? Is it better to make home visit or have people drop their computers of? What legal issues should I watch out for? etc.

Thank you for your time.