Web Site Repair

I have a website that needs repaired - casino-players-world.com. Basically, the internal links are messed up. If you click on a category like poker the new screen will list numerous poker article links. However, none of these article links work. This is true for all categories except blackjack. I fixed the blackjack links. However, you will notice the nav bar on the left does not work when you are on any of the blackjack article pages. The nav bar links are non functioning on all the article pages it seems. 1) I need the links to all function properly. 2) I have many affilaite banners/buttons that are not properly appearing on many of the article pages. I need these to all work. 3) Some pages have the wrong text at the top. I can change all these I just need all the links to work. I only know basic html and can't fix the site. Thanks