If you communicate internationally, there will be times when you need to use an accented character in your prose. If you don't use these special characters very often, you may fumble around OS X looking for a way to add to your text. Don't waste extra time hunting through the preferences or the character viewer looking for a match, these accented characters are right at your fingertips if you know where to find them.
The quickest way to add an accented letter also is the easiest one to remember. Just tap and hold the letter key and a box will appear with a selection of the available accents. You can click on the correct character or type the number underneath the character that you want to enter. It works with all the vowels as well as a few consonants that have special accents, like C, L and N. Now that you this trick, it'll only take you a few seconds to enter "olé" the next time you want to express your enthusiasm.