Is it possible to add emails (gmail for example) as a tasks? I can't seem to find the way to conncet todoist with my google calendar.
You can export your tasks with Google Calendar as shown in this video: http://www.youtube.com/watch?v=gzGubOy8GuE
To link email messages as tasks, you need one of our browser plugins (for Chrome, Firefox or "Todoist Anywhere" for any other browser). You can see how it works in Chrome in this video: http://www.youtube.com/watch?v=TfslbgUv4F4&list=PL2EEC42CE38B0AF8E&index=19
The other option is to send/forward tasks to your Todoist projects. This doesn't require any plugins and you can find detailed information about this feature by right-clicking on the project you want to send tasks to and choosing "Email tasks to this project".