Hello fellas,
  I'm new to web building/design etc.. I'm surprised I have got this far..  I'm basically building a e-commerce site.. I chose to install Zen Cart.. Now before hand I had loaded homepage onto the server.. Now that I installed ZEN cart.. I can go to the admin section.. but I have two questions.. How do I see the Zen cart on the web site.. as when I type in my URL I just get my homepage.. I guess I need to delete it ot link to the zencart??and the second question where/how do I modify Zen cart.. say for banners,pics and such??

I am sorry for the rant, but this has been a very frustrating three days..

Is Zencart installed under public_html or a subfolder? If it is under public_html, you will need to delete or rename the other index page to have index.php come up instead or you can change the order the server looks for index pages with a .htaccess directive such as this:

DirectoryIndex index.php index.htm index.html

Zen cart would have installed index.php as its entry point. If you installed it into the root directory (public_html/), it will not show up automatically unless you get rid of index.html and index.htm. Those two index files are looked for (and run) before the server looks for index.php. I'm not fond of changing the DirectoryIndex search order, especially if you're a complete Noob, but it can be done.

I would suggest reinstalling your cart into its own subdirectory (public_html/store/) just to keep this major subsystem cleanly isolated so that it doesn't stomp on other subsystems' toes (or get its own stomped on). If it's the only thing on your site (for now), you can put a redirection in your root directory to automatically bring visitors to the store. In the future, you'll have a clean base to install blogs, discussion boards, galleries, etc., with your own Home Page with links to the subsystems.

I would not try to use Komposer's site manager to try to work with your site. Use cPanel > File Manager and/or a good FTP client.

bn.com does sell a book on Zen Cart. Get the title and then drop by your local B & N to see if it's on the shelf.

You might also read the reviews and sample a page or two on amazon.com.