If your guitar has a tremolo bridge, always remember that each string that you tune will go down in pitch as you tune next string. One solution to this is to over tune strings. That is to say, you may need to tune your low E string to an F in order to have it be around an E note by time you finish tuning other strings. Over time you'll get a feel for how much you need to over tune each string and it will become second nature.

If you play in a band, it is a good idea to always tune to same pitch. Standard pitch is 440 but some bands like to tune down to 430 or even 420 for heavier sound or vocal reasons or both. My point is that if you're practicing at 430 then you have a gig and your band tunes to 440, everything will suddenly sound different, your singer might not be able hit all notes he or she did at practice, your solos might even sound wrong. This is because everything is now a half step higher in pitch. Make things easy on yourself, pick a pitch and stick with it, at practice and gigs.

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The time limits in correspondence play are usually between 30 and 60 days for every 10 moves. This allows for far deeper calculation, meaning that blunders are very rare. The use of any kind of assistance including chess databases and chess programs is allowed, although many hobby players voluntarily do without them

The international governing body of correspondence chess is International Correspondence Chess Federation (ICCF) which organises postal and e-mail events. There are numerous national and regional bodies for postal chess, as well as a number of organisations devoted to organising e-mail play (such as International Email Chess Group (IECG) and International E-mail Chess Club (IECC)).