How do I remove my old (Shimano Sora) brake/gear levers and replace them with new (Shimano 105 5800) levers?
(This is the bike if you want to know more components details).
As a note, I'm asking about step-wise instructions on the technique/method, not technical issues like going from 9- to 11-speed as covered here (Upgrade Shimano Sora shifters to 105)