For anoraks everywhere, here are some of my own little tips. They'll get added to whenever I can think of anything else from my vast experience.

These foibles can vary from the annoyingly pedantic to the incredibly useful... depending on your perspective and experience. I hope you find them interesting anyway!

Signed

Nobby No Friends.

12 string - guitar 5th tuning
Capos - staying in tune
Creative in standard tuning
Hammer off, get 2 notes
Lazy guitar playing
Order of guitar effects
Staying in tune after tuning
Tuning by ear to standard
Tunings

12 string - tuning confusion
Banjo mutes
Cajon - live miking
Capos - banjo 5th string detachable
Changing strings and staying in tune
Cuts on playing fingers
Endless Choice
Fingernails - ping pong
Fingerpicks
Fretboards - dry
Glockenspiel tuning
Guitar case accidents
Scratches - from belt buckles
Scratches - on plastic
String pegs - keep 'em down
Strings - boiling
Strings - cleaning clean
Strings - sticking in nut
Truss rod seasonal adjustment
Tuners

Click breakthrough
Click can help rals
Dropping in guitar with vocal
Eliminating string noise on recordings
Mike pops - how to lose them
Pitching backing vocals
Recording acoustic instruments
Thickening backing vocals
Use of loops