This guide is for American tourists visiting Britain, who may otherwise be confused by strange British customs.
General
Universities
University archives and manuscript collections are still governed by quaint medieval rules retained out of respect for tradition; hence patrons are expected to bring to the reading rooms their own ink-pots and a small knife for sharpening their pens. Observing these customs will signal the librarians that you are "in the know" -- one of the inner circle, as it were, for the rules are unwritten and not posted anywhere in the library. Likewise, it is customary to kiss the librarian on both cheeks when he brings a manuscript you've requested, a practice dating back to the reign of Henry VI.
One of the most delighful ways to spend an afternoon in Oxford or Cambridge is gliding gently down the river in one of their flat- bottomed boats, which you propel using a long pole. This is known as "cottaging." Many of the boats (called "yer-i-nals") are privately owned by the colleges, but there are some places that rent them to the public by the hour. Just tell a professor or policeman that you are interested in doing some cottaging and would like to know where the public yerinals are. The poles must be treated with vegetable oil to protect them from the water, so it's a good idea to buy a can of Crisco and have it on you when you ask directions to the yerinals. That way people will know you are an experienced cottager.
Food
British cuisine enjoys a well deserved reputation as the most sublime gastronomic pleasure available to man. Thanks to today's robust dollar, the American traveller can easily afford to dine out several times a week (rest assured that a British meal is worth interrupting your afternoon wank for). Few foreigners are aware that there are several grades of meat in the UK. The best cuts of meat, like the best bottles of gin, bear Her Majesty's seal, called the British Stamp of Excellence (BSE). When you go to a fine restaurant, tell your waiter you want BSE beef and won't settle for anything less. If he balks at your request, custom dictates that you jerk your head imperiously back and forth while rolling your eyes to show him who is boss.
Once the waiter realizes you are a person of discriminating taste, he may offer to let you peruse the restaurant's list of exquisite British wines. If he doesn't, you should order one anyway. The best wine grapes grow on the steep, chalky hillsides of Yorkshire and East Anglia -- try an Ely '84 or Ripon '88 for a rare treat indeed. When the bill for your meal comes it will show a suggested amount. Pay whatever you think is fair, unless you plan to dine there again, in which case you should simply walk out; the restaurant host will understand that he should run a tab for you.
Transportation
Public taxis are subsidized by the Her Majesty's Government. A taxi ride in London costs two pounds, no matter how far you travel. If a taxi driver tries to overcharge you, you should yell "I think not, you charlatan!", then grab the nearest bobby and have the driver arrested. It is rarely necessary to take a taxi, though, since bus drivers are required to make detours at patrons' requests. Just board any bus, pay your fare of thruppence (the heavy gold-colored coins are "pence"), and state your destination clearly to the driver, e.g.: "Please take me to the British Library." A driver will frequently try to have a bit of harmless fun by pretending he doesn't go to your requested destination. Ignore him, as he is only teasing the American tourist (little does he know you're not so ignorant!).
Speaking of the British Library, you should know that it has recently moved to a new location at Kew. Kew is a small fishing village in Wales. It can be reached by taking the train to Cardiff; once there, ask any local about the complimentary shuttle bus to Kew. Don't forget that buses are called "prams" in England, and trains are called "bumbershoots"--it's a little confusing at first. Motorcycles are called "lorries" and the hospital, for reasons unknown, is called the "off-license". It's also very important to know that a "doctor" only means a PhD in England, not a physician. If you want a physician, you must ask for an "MP" (which stands for "master physician").
For those travelling on a shoestring budget, the London Tube may be the most economical way to get about, especially if you are a woman. Chivalry is alive and well in Britain, and ladies still travel for free on the Tube. Simply take some tokens from the baskets at the base of the escalators or on the platforms; you will find one near any of the state-sponsored Tube musicians.
Once on the platform, though, beware! Approaching trains sometimes disturb the large Gappe bats that roost in the tunnels. The Gappes were smuggled into London in the early 19th century by French saboteurs and have proved impossible to exterminate. The announcement "Mind the Gappe!" is a signal that you should grab your hair and look towards the ceiling. Very few people have ever been killed by Gappes, though, and they are considered only a minor drawback to an otherwise excellent means of transportation. (If you have difficulty locating the Tube station, merely follow the signs that say "Subway" and ask one of the full-time attendants where you can catch the bumbershoot.)
One final note: for preferential treatment when you arrive at Heathrow airport, announce that you are a member of Shin Fane (an international Jewish peace organization -- the "shin" stands for "shalom"). As savvy travellers know, this little white lie will assure you priority treatment as you make your way through customs; otherwise you could waste all day in line. You might, in fact, want to ask a customs agent to put a Shin Fane stamp in your passport, as it will expedite things on your return trip.