When writing your post, you have the option of using the visual or HTML mode of the editor. The visual mode lets you see your post as is, while the HTML mode shows you the code and replaces the WYSIWYG editor buttons with quicktags. These quicktags are explained as follows.

With Quicktag buttons that insert HTML tags, you can for example click i to insert the opening tag, type the text to be enclosed, and click i or Close Tags to insert the closing tag. However, you can eliminate the need for this 'close' step by changing your workflow a bit: type your text, select the portion to be emphasized (that is, italicized), then click i and your highlighted text will be wrapped in the opening and closing tags.

Don’t stop blogging. If you don’t have anything to write about, chances are, you are still holding back. Let loose. Perhaps surf more blogs and maybe you’ll get an idea. You can write about your friends, complain about your boss, or simply rant about what’s gone wrong. Yet if nothing else works, just write a review on the latest movie, book, or product. Easy actually.