5 ways you might customize your sandbox editor setup:
1. Creating tabs in one window - Drag and drop windows on top of the other to avoid too many of them open at the same time
2. Drag and drop window to attach it to any side of the viewport
3. 'M' button for material editor
4. Tools > Customise keyboard > Toolbars > new > Name it > Drag and drop options from 'commands' and make a new toolbar
5. Hot keys - Customise > Keyboard > assign commands to a key. Hover over buttons with the cursor on screen to check the hotkey to turn it on
6.
3 different ways of moving around your level:
1. W,S,Z,A keys - forward, right, back, left
2. Right click to look around, and middle scroll button to pan around. Both mouse buttons can be pressed at the same time to navigate.
3. Shift - lets you move slightly faster
(Extra)
4. Alt + middle mouse button - rotate around middle of the screen
5. Ctrl + F1 (save position) & Shift + F1 (lets you go back to saved position) - Also works with F2, F3, etc.
6. Helpers button at top right corner turns on all the objects yo can work with, and show the name.
5 shortcuts/buttons and functions:
1. Select objects (Ctrl + T) - overview of objects in the scene, the layer it's in, materials it's using, etc.
2. "Open asset browser" in the toolbar - allows you to browse for textures, sounds, models, brushes etc.
3. Drag and drop assets on the scene
4. DB in toolbar (Data base view) > Entity library - drag and drop entities (advanced brushes where physics, mass, etc. can be changed). Values of entity can be tweeked from here.
5. Waterfall that emits water particles - the way it emits this can be changed: Shift + space (to see emitter in helper) > DB > Particles > CRP_Waterfall (in left column) > Select type of emitter > Right click and 'assign selected object'