How do I edit links and pages in sideboxes.

So basically I have a question, how do I add, remove, rename, or edit something in the "sideboxes" or on the top or bottom of the page?

For example, on the top of my website, www.custompcshop.net, there are links: Privacy Notice and Shared. (Warranty Information is just a re-direct so don't use that as an example). My question is, how do I add more links to this spot on my page, how do I rename these links, i.e. rename Shared to About Us, and how do I edit the content on the pages? I know some certain links such as Privacy Notice can be edited using the Define Pages editor in the admin control panel, but some can not.

Secondly, how do I edit, rename, add, and remove links in my sideboxes? For instance, in the "Important Links" Sidebox, how would I edit the name of the link and the actual page "Shared"?

My main issue would be getting the Shared page/link renamed and edited or simply removed, so it would be great if you could focus on that.

I know I'm asking a lot, but I really have looked for hours and I can't find anything helpful enough or anything that actually works.

Thank you so much for all of your help.

Please ask if you don't understand anything I'm asking ^_^

those links are called EZpages.

you can modify the link ( title ) , its content , etc by going to admin

Tools > Ezpages

you will see list of links that are either active ( green icon ) or inactive ( red icon ) , you can activate or disable links from there ,

or you can click on new file and start making new links and content and set them either to your header , footer, or sidebox or combination of all .

hope this helps.

You can find more on this in tutorial , link to tutorial on header.