Points to remember while setting up practice

Greetings to all fellow chartered's !

I'm a CA in job and now thinking to change my career line from job to practice. I want your help for guidance on how to set up a CA firm with details like what courses will be helpfull, eligibility for various assignments, how to secure clients and other topics which you all think would be helpfull.

PS: I have a 3 year part time COP.

Any input on the topic is highly appreciated.

Thanks !