Go here this should help bunches!
http://www.microsoft.com/security/online-privacy/safely-dispose-computers-and-devices.aspx
Hope this website helps!
B. it can save time by allowing you to quickly fill cells
Answer:
<a href="enter_site_url_here">Click here to visit site!</a>
Explanation:
href is the link that the element is going to point towards. Meaning it's going to direct the end-user to that site. "Click here to visit site!" is the text that the element is going to say, and that text will have an underline. So it's best to keep it short as you don't want <u>something like this happening on your site</u>.
I'd stick with the classic "here" as the text and have the text before-hand say "Click" and after-hand say " to visit site X" with X being the site name. Or, something along those lines.
To prevent others who use your worksheet from seeing the data you can hide column C
