The renpy package when you download it comes with a tutorial scenario.
The official documentation is also pretty good:
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And here's a quick 10-minute tutorial
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I feel the need to stress though,
do not use python 2.X it is no longer supported.
Anybody stubborn enough to tell you to use Python 2.X should be ignored. You can follow along most python2.7 tutorials just fine, some syntax is a little different. Hell, use ChatGPT or some other deriviation to help you translate those tutorials to Python3, that would probably be a useful learning experience.
I know it's not the answer you wanted, maybe some good samaritan will come along and write one for you (or have better links)

But learning to make one will mean having to read the documentation anyway.