shameless POWERCRANK plug
Recommended reading for all cyclists - Cyclecraft - Effective Cycling
Condor Cycles - quite possibly the best bike shop in London
Don't run red lights, wear a helmet, use hand signals, get some cycle lights(front and rear) and, FFS, don't run red lights!
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)