I know this has been asked a lot but I've not yet found a good beginners guide to getting started with my first adwords campaign to drive some PPC traffic to a product landing page.

Does anyone know of one that is pretty close to best practice and will do a good job of ensuring I don't waste too much money?

So far I've just discovered lots of tidbits and keyword search generation tools all over the place but not one good beginners guide that fills me with confidence.

My perfectionism is often a barrier to me starting something and the threat of wasting money on adwords is being particularly troublesome.