I'm a new user on SO and am trying to find the 'right' way to use it. Right now I'm looking for the page to put into my bookmarks.
Is there something like a dashboard where I can have an overview of my questions and answers despite my profile page?
The 'Recent Activity' page shows you stuff that has happened in your questions/answers recently.
The envelope will turn orange if something has happened, and it will stay that way until you click on it.
Your profile page shows you latest questions/answers.
Frankly, I just know what my reputation is at, and if it increases I'll check the recent activity page.
The closest to "bookmarks" is "favorites". Click on the star underneath the score for a question, and it toggles whether or not that question is a favorite. Then on your profile page, click on the "favorites" tab to see them all.
To see your questions, I'd just use the profile page.