Ask HN: How to write end user agreement and liscenses

Hi. I'm prep to sell software program liscense. One creative common restricting commercial use another allowing commercial use.

I also need to Copyright protect my computer program and a tutorial text.

Copyright Liscense I can pick from online and provide the buyer.

What about commercial liscense and end user agreement?

Copyright I'll have to pay legal.

These thoughts are heavy in head. Im not sure if I'm using right words to communicate or ask what I need.

I need to protect my software, for formality, and to learn legals, and to sell to businesses. If non business use my software or duplicate it, it's fine, but I want to be strong if some other businesses uses my technique. What's next step for me?