This Plugin gives you the possibility to hide the Dashboard before selected users. 
It is very flexible, since it works with an extra capability “Hide Dashboard”. 
This capability can be assigned to one or more roles and/or as an extra capability to one or more users.
Users with hidden Dashboard will be redirected to their profile-page.
You need also the “<a href="http://www.im-web-gefunden.de/wordpress-plugins/role-manager/" title="Role Manager Plugin for WordPress" rel="nofollow ugc">Role Manager Plugin</a>” for this Plugin.

IWG Hide Dashboard

"Hide Dashboard" hides the dashboard for all users with the capability "hide_dashboard".

Christiaan Conover

Author Customization gives you much more flexibility in managing post and page author data. Your author data will no longer be tied solely to the WordPress user system, and can now be managed on a per-post basis. Author name and description are saved with each post, allowing you to preserve this information as it was when the post was published.
Features
<ul>
<li>Per-post author display name and biographical info</li>
<li>TinyMCE (WYSIWYG) editor for user profile and per-post biographical info</li>
<li>rel=”nofollow” link inside biographical info entries</li>
</ul>

Author Customization

Author Customization expands core author management with features such as per-post author information and rich user bio editing.

IWG Hide Dashboard vs Author Customization