Learning To Do Taxes?

I have started a bookkeeping business and I am interested in learning to do taxes.
I’m thinking I would like to do just personal taxes and maybe work my way into small business taxes.
Is it easy to learn to file taxes? And what software is recommended (QuickBooks user)? How much should I charge?
I am just trying to make up my mind if I want to put the time and money into learning this. I realize I will have costs involved and I am wondering if it will be worth it.
I would love some input…THANKS!