Ok, I made a 10" round cake, 6 layers high...problem, the cake is taller that it is wide by about 2-3". I can't drape the fondant because it will tear and pleat right? Does anyone have any ideas to cover this tower?

I cover round cakes that are super tall all the time. Just takes some patience. And a cold chilled cake with super sharp smooth surfaces and edges helps immensely.

Hi and Welcome to CC, Jennle.

Here are examples of some pretty tall tiered cakes that were done that way:

http://blog.pinkcakebox.com/damask-crystal-wedding-cake-2009-05-25.htm

http://bignutbrownhare.wordpress.com/

Would probably be more easily done with a commercial than homemade fondant (less stretching, etc.) until you're more experienced. (A good opportunity to use those Michaels/Hobby Lobby 40% off coupons to get some Wilton fondant to practice with - definitely not to eat!)

Everything you need to know to make, decorate and assemble tiered/stacked/layer cakes:

http://www.cakecentral.com/cake-decorating-ftopict-605188-.html

Above super thread has popular CC recipes for crusting American buttercreams, several types of fondant and doctored cake mix (WASC and other flavor variations) - and so much more!

Might want to grab a cup of your favorite beverage and get comfy - it's a long read.

HTH

What is the cake? If it has a "back" then you could wrap around the cake and then add the top on.