A visual cheat-sheet for the 12 keyboard shortcuts found in the Arduino IDE.
Ctrl S — Save
Ctrl Shift S — Save as
Ctrl N — Open a new sketch
Ctrl O — Open an existing sketch
Ctrl Q — Close the Arduino IDE
Ctrl R — Verify
Ctrl U — Upload
Ctrl F — Find
Ctrl T — Adjust the alignment and spacing
Ctrl / — Comment
Ctrl Shift M — Open the serial monitor
Ctrl K — Open the sketch folder