If you are using the Structural Template there is already a Bar Bending Schedule in the Template so you can use this all you need to really do to get it working correctly is add the Rebar Number and Remove Bar Mark.
This is a great starting point and then add any additional Parameters as required.

As regards other Schedules, please use the Help Guide/YouTube/etc.
There is a good Autodesk Learn Platform which will get you most of the way and then use the forums for more in-depth help/support when you get stuck.
Autodesk Learning
On-demand Learning | Autodesk
For example - Create Rebar bending schedules in Revit | Autodesk
One final Tip, if you purchase your Autodesk software through a reseller use them as a primary source for training and additional help and training if they want your business i am sure they would be happy to help!
Jay Colcombe
Autodesk Certified Instructor
Revit Architecture & Structure Certified Professional
AutoCAD Certified Professional
B.Sc. Hons Civil & Structural Engineering
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