How to go about starting sidework

Hello I'm new here but thats not the topic.
So I've been a mechanic for 1 1/2 years now. Went to school, graduated at the top of my class, have a few ASE certs, taking 3 more in may. Im good at what I do, considered a "B" tech. Maybe 3-4 comebacks my first year in the field. Take my time on the details.

I was wondering what those of you who do side work at home have/do to get the work in and complete it in a timely fashion.

I figured business cards, but what should I put on them. Also besides all my usual tools what else do you recommend. Scanner of some sort, air compressor, lights, floor jack and stands? Anything else I'm missing?

Thank you for your time

BE CAREFUL IF YOU GET CAUGHT BY THE CITY FOR RUNNING A BUSINESS YOU COULD BE FINED BIG TIME MY FRIEND LEARNED THE HARD WAY.