1. Grab an Allen/hex key of the appropriate size.
2. Undo the seat post clamp bolt - remember how many turns or half turns you make until the seat post is loose.
3. (optional) Put a smear of grease on the seat post just above where the seat post enters the frame.
4. Push the seat post down into the seat tube. Try not to twist it too much.
5. While ensuring the saddle is aligned with the frame, tighten seat post clamp bolt the same number of turns or half turns as you did to undo it.
6. Take it for a test ride.
7. Repeat steps 2-6 until desired saddle height is reached.
8. Remove IPA from fridge and reward yourself for a job well done.