HTML in emails, how to?

Really, how difficult is it to Google?

Actually i did google. But its still pretty hard to find what i want. All the guides are written like i already knew what to look for. And i don't

It depends on how you're sending them. If it's via some kind of ASP/PHP script, you have to make sure it's multipart/html encoded and then you just dump the HTML into the HTMLBody. Outlook uses Word to write its emails and HTML encoding is selected by default. So, you can bold, italicize, add images, etc... within the editor.