Where to analyse your traffic

I’m a big fan of tools which lets you analyze traffic on your website. I think everyone knows the Google Analitycs tool which is my favourite, althought I never had time to properly learn, how to use it (by the way any links to nice tutorials are welcome).
Here I list theree tools I have my websites registered with:

Number 1. Google Analitycs

Number 2. Quantcast
Number 3. Compete

Number 4. Alexa

I guess there are many more and I’m still going blind. If anyone wants to share, the comments section is waiting.