If you want to fix your own bike we want to help. For a start there is an excellent series of instructional videos at www.madegood.org. If you want to do a hands on course then regular classes are held in the basement at bikefix by the London School of Cycling, concentrating on basic maintainance, diagnostics and essential get you home repairs. For more advanced training there is Cycle Systems Academy, who have a London base and offer courses leading to a full NVQ apprenticeship. For advice on wheelbuilding there is an excellent resourse at Wheelpro including a spoke length calculator and a downloadable book to buy.