Sample code from the stepper library will help you. If you need further help let me know. I will charge though.
Arduino ide-examples .. Stepper..
I tried all the samples in this library. I don't have a tool to measure rpm. Can I make the speed both low and constant with the NE555?
If you can't measure RPM, how were you planning on verifying that it works in the first place?
You can easily use the arduino itself to measure the time of rotation
Based on the responses, clearly nothing will be easy for him.
Then he should be ready to pay someone lol