Create User Dashboard as startpage hope that you can help me. 

Version: Drupal 6/7

i need information about a user dashboard.

we want to create a intranet solution with bug/ticket reporting/scrum functionality and need for a overview a User/Team overview (newest issues/newest tasks etc.). but i don't found any help/information about a user/team dashboard.

1.) can i set a dashboard as startpage?

Greets Frank
You could use Homebox and redirect the user to their individual dashboard on login (possibly using LoginToboggan or Rules).  I've used it before and it's pretty neat.

Following that, you just create views to display your tickets/issues/tasks etc and display them in the homebox.