Press Alt with the appropriate letter. For example, to type ɔ or ɒ, hold Alt and press O once or twice.
Stop the mouse over each button to learn its keyboard shortcut.
Alt + click a button to copy a single character to the clipboard.
You can select text and press Ctrl + C to copy it to your document. In your target document, press Ctrl + V, or, if you want to paste the text without formatting, try Ctrl + Shift + V.
After pasting, you may need to choose an IPA-enabled font (such as Lucida or Arial) in your target application to see all characters.
This IPA keyboard allows you to type pronunciations of English words as they appear in major English dictionaries from publishers like Longman, Oxford, etc. Dictionary transcriptions are “phonemic transcriptions”. They only give you the broad-strokes view of the pronunciation – just enough to make sure you won’t confuse two different words. If you need to represent precise sound qualities (for example, the different quality of p in pot vs. spot) or differences between accents of English, use the full IPA keyboard instead.