I'm quite tempted to invest in a dynamo system. As well as the lighting, options to charge batteries, phones, Garmins etc would be ideal.
I've heard about buffer batteries, stem-cap USB charging ports, amongst the myriad of dynamo-fu.
The problem I have is I'm electrically clueless. I'm daunted by the prospect of not knowing where to start with turning a range of parts into an effective, wired, working whole.
Once I decide what parts will work best for my purposes, how much knowledge would I need to acquire? Can I rely on decent instructions (I know it probably depends on what I buy), or is there a Dynamos For Dummies-esque reference out there? A SON28 hub is my likely starting point.
Any advice or pointers would be appreciated. Thanks in advance.