the basics of the family

[mir]

Bye to all,
I have a question that tells the origins of the revit school.
I'm talking about the revit pipe family.

I would like to create one of my own according to the rules. How do I leave?
I just need straight lines and curves at 90° and 45°... Nothing else for now.
different diameters.

Please help me! :
Thank you.
♪

 

[Tristan]

I would start from a nice course...they are not things that you learn on a forum like this, to squeaks and mouths