How do I build systems for my business?

Pick one repeatable job. Write down how it moves today: what starts it, what information it needs, who does each step, and what happens next.

Then work through it in order. Eliminate the steps that don't need to happen. Simplify what's left. Delegate the parts that need a person but not you. Automate what is clear and repeatable.

Do one job at a time and make sure it works before you add the next. Software can help, but the system is the process itself.