Hi 420R I think you shouldn't worry about the manual, given the complexity of what they are trying to archive in a single document (either style) with ever changing specifications its actually not bad. It gets you close, and as already mentioned there is plenty of support, Caterham themselves, blogs and blatchat all are fantastic sources of information. The real question you need to ask yourself is how practical are you? I don't think you need to be a mechanic, or have years of experience working on cars to build a Caterham, but you must at least know your way around basic hand tools, and be happy to use them on cars, or find someone who does, and is prepared to help. Better still get in touch with the local club meet, there is always someone, like me, that loves working on Caterhams, and has all the tools/experience you could possibly need, and is willing to help for little more than tea and biscuits (when needed). Given the level of support available your confidence to complete the build wont be limited to the quality of the manual. Chris.