I second "clutch judder". It is common with a worn or baddly surfaced pressure plate. It can also be made worse by improper or inexperienced clutch application. When starting out the engine should only be reved up just enough to prevent the car from stalling. Some people rev the car way too high and slip the clutch. Think about it, when you shift into any other gear but 1st, you just effectivley dump the clutch. You don't feather it at all.