I cannot find a simple step-by-step process to understand how to go from a BTC private address, in the form of a 256-bit binary number, to initiating an actual transaction.  A description or link to a good web page will be greatly appreciated.

Here is what I suspect happens.

1. Create 256-bit random number.  Yeah, a bit difficult to do properly.
2. translate to base 58 format.
   2.a. takes multiple steps, what are they?
3. Create seed phrases, how to do this?
4. There is more stuff needed to actually initiate a BTC transaction I don't understand, but keep this short and stop here.

This is probably already on this forum.  Do you have a search phrase that will discover it? Link to a specific thread?

Thank you for your time.