World's slowest cyclist.
Join Date: Oct 2007
Location: Londonderry, NH
Bikes: Cannondale CAAD5 and Cannondale Rush
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Go to the Park Tool or Sheldon Brown websites and read up!
A deraileur and brake tune up would be a good idea. Make sure the wheels are straight, the tires inflated, go for a ride and see if you need to make ergonomic adjustments. That's about all you should need unless stuff is worn out.
I wouldn't go removing anything until you understand what it's for, why it's there, and whether or not life would be better without it. Bar ends (lever things) and dust boots (accordian things) are two things you probably want to re-consider removing. They have uses.