Hi sjs,
Welcome to the forum.
You can download the Missions Manual from the SS2008 > Missions board:
http://80.95.161.114/shipsim/forum/index.php/topic,2886.msg28895.html#msg28895 (http://80.95.161.114/shipsim/forum/index.php/topic,2886.msg28895.html#msg28895)
To access that board, you must first register your license key in your forum profile.
The direct heading to the next waypoint is shown on the HUD—the Head-Up-Display across the top of your screen. If you don’t see the HUD, try clicking the leftmost icon at the bottom of the screen—the one with the big letter i. Also, the Tab key toggles most screen elements on & off.
Course to waypoint and Distance to waypoint are shown in the middle of the HUD.
There is a green tick mark on the compass rose on the chart that shows the bearing to the next waypoint.
Regards,
Marty