The delicate fabric can hold onto white wine, champagne, and even perspiration stains that, while not immediately visible, may appear months after your wedding. A dress that has been properly cleaned is much more marketable. Even if you think you didn't get anything on the dress, it's best to have it cleaned right after the wedding. Old stains are more difficult, and sometimes impossible, to remove without damaging the dress. Take the dress to a specialist in cleaning wedding gowns and formal wear. If there isn't one in your area, ask your neighborhood dry cleaner about their expertise and even ask for references before leaving your dress with them. Paying a little more for a specialist is well worth the cost to know that it's done right. Whether you plan to sell your dress directly or use an online service, it helps to have several clear, well-lit pictures of the dress to entice potential buyers. Make sure to take photos from both the front and back, so buyers can see what the entire dress looks like. When you're taking the photos, it's better to place the dress on a hanger rather than lay it on a flat surface. Take close-up photos of any detail work, such as beading, sequins, or lace. If there is any damage to your dress, make sure to include photos of it. It's better to let buyers know ahead of time, so they can decide if they're still serious about buying the dress. Asking the right amount for your dress can help increase your chances of selling it. In most cases, you can expect to sell a used dress that's in good condition and less than two and a half years old for half the retail price. You may want to start off asking slightly more than that, though, so you have some room to negotiate. You can often resell dresses made by well-known designers, such as Vera Wang, Carolina Herrera, or Monique Lhuillier, for 60 to 70 percent of the price that you paid it. You're usually going to get the best price for your dress if you sell it within two and a half years of purchasing it because the style will probably still be on trend. If you know that you want to sell your dress, don't waste time after the wedding -- the sooner you sell it, the more value it will have. While you're probably going to get more money for a newer dress, that doesn't mean you can't make money on a vintage dress. Even '80s and '90s styles can be popular these days. In terms of timing, you're better off selling your dress in February and March because those are the peak months for wedding dress sales. The holiday period between Thanksgiving and New Year's is the worst time to sell.
++++++++++
One-sentence summary -- Have the dress cleaned after your wedding. Take photos of the dress. Set a fair price. Sell it as quickly as possible.

One of the things that can make the difference between true north and magnetic north so difficult for navigators is that the effect on compasses can change over time. This phenomenon is called declination as the earth's magnetic field fluctuates, the number of degrees by which a compass will be "off" from true north will shift accordingly. Thus, to accurately adjust your compass to account for this effect, you'll need a recent declination value for your location. Luckily, the National Geophysical Data Center (NGDC) keeps up-to date records of global declination values. At the NGDC website, you can enter your current location to receive the most recent declination value available for your area. Some physical maps will also include declination values for the area displayed in the map. Topographical maps are the most likely to include this information, though it can be in other types of maps as well. If you're considering navigating by map and compass, consider checking your map's legend to see whether the map contains accurate declination data. Note, of course, that declination changes over time, so old maps can quickly become out of date. For the most accurate values, use the most recently-published map available. Once you know how "off" your compass is from true north, it's not hard to adjust for this discrepancy. Begin by finding magnetic north. Hold your compass flat and level in front of you. If your compass has a travel arrow (usually a skinny red arrow on the flat lower portion of the compass, point this forward. Watch the motion of the compass needle. When the needle stops moving, note the direction the needle points. This will be the north-south axis. Most modern compasses have a needle that is half red and half white. In this case, the red end of the needle is the north-pointing end. If you're navigating by compass, typically, at this point, you would adjust the compass's bezel to that the direction you're intending to travel is directly in front of you, aligned with the travel arrow. In this case, since we want to find north, we'll turn the bezel so that the "N" (and the wide arrow beneath it) is directly in front of us. Note that this magnetic north, not true north we still need to adjust for declination. Turn your body until the compass's needle is lined up with the orienting arrow on the bezel (and, thus, the travel arrow as well). You are now facing toward magnetic north. To find true north, turn the bezel the same magnitude and direction as your declination value. Most compasses will have degree markers on the bezel to help you do this. Next, line up your needle and your orienting arrow by turning your body again. You should now be facing true north! For example, let's say that we originally obtained a declination value of 14o E for the area we're in. If we're facing towards magnetic north, we would turn our bezel 14o to the east (clockwise, in this case). Then, we would turn to the left (which is west) to line up the needle with the orienting arrow, leaving us facing at true north (14o west of magnetic north).
++++++++++
One-sentence summary -- Find your local declination from the NGDC. Alternatively, find your declination from a map. Find magnetic north with your compass. Turn the orienting arrow so it points ahead of you. Adjust for declination.

If it feels hard, then wait until the pressure settles.
++++++++++
One-sentence summary --
Use your finger to snap or flick the side of the can. Turn the can a quarter turn & flick it again. Repeat this six times. Feel for the "pressure" on the container. Slip your finger underneath the soda tab very carefully. Lift up the tab slowly. Wait for any "hisses" to slow down or stop. Open the soda as normal.