Welcome to the forum Barry, you'll find the members on here are a friendly and helpful bunch 🙂
Here is an online free workshop manual bwhich will help. The link is on the direct page for the spring replacement 👍
https://workshop-manuals.com/audi/a1/running_gear_front-wheel_drive/rear_suspension_drive_shaft/shock_absorbers_coil_springs/removing_and_installing_coil_spring/
Cheers
Steve