Placing Affiliate links in Cpanel

Hi,

BTW: I am on a MacBook Pro using WordPress, Firefox and Safari.

In my cpanel I’ve placed an ad-content link at the top of the side bar but since I

1) have tried to replace it with ad-links with no success. I have cleared my history but I still see the old ad-content box in the browser… why?

2) I am also unable to see my affiliate link that I also placed at the top of the side bar. I DO see it when I click “show file” in cpanel but not when viewing via browser!

3) What file do I paste code into, to have links show up at the top of my blogs page? What is the path (ie: wordpress>wp-content>admin?????

4) Lastly, my shopping cart links from paypal.com are not visable in Safari. I see it in Firefox but when I paste it into my pages, it is in a different font face/size than my blogs font face/size! Does this mean something? Or is that an indication that it may not show up in other browsers?

Thank you in advance,

https://www.shawnconrad.com