How do I make text bold in my description?

Select the text then click on B button. To unbold bold text select the bold text and press B again.

How do I insert a hyperlink into my description?

Type in the text you want to appear in the description (not the link itself) then click the Insert/edit link button. This opens the link pop-up. If the popup doesn't open you'll need to check your security settings. In the box just type in the full link url, such as http://www.humbersidecda.info and then click Update.