TSM Resources provides an extensive library of resources for Autograph including the free software and excellent CPD from Complete Mathematics.
The MEI A/A Level tasks for Autograph are excellent, they provide instructions for the use of the software and ask some great questions to get students thinking and exploring.
Note the legacy material available on TSM Resources, this is indeed still useful. The Training manual and Autograph tasks here are all very clear showing step by step instructions.
Craig Barton’s videos too show clear step by step instructions.