Need a guide on changing camera lens

A couple of weeks ago my beloved camera got a bump on its camera body, which led me to the dreaded "Lens Error". Since repair from Canon distributor here in Malta, was quoted as costing as much as buying a new one, I decided to go the DIY route. Although I have already gone through a number of disassembling guides for similar models, I would feel more secure in following a specific guide. Or at least receive some pointers from someone with experience on the specific model.

Thanks a lot