MAYA
CHECK NORMALS: Lighting >> Two Sided Lighting Polygon should turn black if the normals are not facing correctly.
SELECTING POLYGONS: To avoid selecting the back faces in a model go to display > polygon custom display, turn on Backface Culling.
ZBRUSH
Lower Sub Division: To lower Sub Division when there is no division set go to Geometry>>Reconstruct Subdiv
Smart Resym: Mask area you want to mirror sculpt. Go to Deformation>>Smart ReSym
Solo Button: Shows only the working subtool and hides the rest. Preference >> Edit >> Click to Solo and click on the document area will toggle Solo on and off.
SHORT CUT KEY
Zoom in: Hold down alt, click mouse and let go of the alt key, move mouse again.
Assign Custom Hot keys: Hold down Ctrl Alt Click then assign your hot key.
L: Toggles Lazy Mouse on and off.
N: Quick slection for SubtTools.
C: Colour picker. Rollover colour and press C.