All you need to do it activate the PopChar window, click the desired character, and the character appears in your current document. It works in a similar way to theSpecial Characters option in Microsoft Wordexcept it's much more accessible and comprehensive.
PopChar canautomatically detect the font that you are usingso that the characters won't look out of place. You can insertHTML symbols, see your most recently used characters and configure Popchar to automatically start at login. The only downside is that this demo version only gives you access to a small number of characters - you'll have to buy the full license to see and use the rest.
PopChar is a powerful and easy to use tool that makes entering unusual characters a breeze.