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 English dictionaries.