10 tips and tricks about the Sandbox User Interface:

• Right'clicking on the label 'Perspective' introduces many options to customise the way in which you are viewing the project. By clicking F3, you can change to wireframe perspective
• If you want to view a specific entity/brush, typing the name of the it in the search bar next to the FOV display will isolate any other entity/brush in the level, except for the one specified in the search bar. 
• By selecting an entity, it will lock onto it, displaying its descriptions on the bottom of the window
• During editor mode, by enabling AIPhysics, this will allow any AI present in the level to move around live in the level
• To teleport to a certain position in the level, the 'go to position' function on the bottom of the level will allow this, by entering the desired coordinates 
• The console on the bottom of the window will allow many commands, such as disabling/enabling sound, motion blur, etc
• The roll up bar is the most useful function in manipulating the level
• It contains functions for modifying terrain, AI, entities, textures, rendering, etc
• The tabs on the top of the window serve as general use. For example,  'File' allows to open, save and create new levels, exporting the level to the engine, etc. 
• The toolbar underneath the latter contains commands that allow editing of entities/brushes, such as selection, placement and rotation