Viewports

3 Different ways of moving around your level 

1. Keys to move around the viewport

W = Forward
A = Left
S = Backward
D = Right

Press shift to move faster
Right click the mouse button to look around
Click middle mouse button to pan around
Scroll wheel mouse to zoom in/out

2. Press "Q" to turn on/off the option to go through objects

3. Go To Position - gives you the exact coordinates of your position and allows you to copy and paste it to be able to go back to it.