English is spoken in many countries around the world, from England and Australia to the United States of America.
English uses the Latin alphabet. Unlike many other languages, it does not use any accent marks or diacritics to indicate stress or special sounds. It is therefore not usually necessary to type any special characters when you are typing English text. If you do encounter a diacritic mark in a borrowed word such as café, you can type it by typing the base character for the letter you want, then selecting the special character from the set of characters which appears. See Typing Accents and Special Characters for details.
If you are using an English list that is meant for speakers of another language, such as an English for Spanish Speakers list, you may need to type the special characters from that other language in certain activities. See the Language-specific information topic for that other language for more details. Depending on which language you speak, you may also be able to change the interface language to your native language to support your English learning.