I just came across an excellent intro to Electronics. It's a great starting point for beginners in Electronics and a useful reference for veterans.
The sections give a good overview of commonly used components. The page on resistors includes a very nice guide to colour codes.
There are several pages on construction, including a soldering guide. It's generally good, though the reference to lead-based solder is a little outdated.
The kits are commercially available from RSH Electronics. If the kits are as good as the website, they are worth a look!
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