Does anyone knows a good tutorial for start Adobe After Effects?
Have a look at http://ae.tutsplus.com/tutorials/workflow/after-effects-for-beginners-getting-started/ as a starting point.
If you want to need tutorial of adobe. you can follow a given link:
http://www.adobe.com/cfusion/exchange/index.cfm?l=-1&s=5&o=desc&exc=17&cat=212&event=producthome