What are you really looking for. Frosting recipe? Fondant source or recipe? How to do a combine cake??? Maybe we can help if you give a bit more info.
Hi and Welcome on your 1st post, bakinbiz. 
Everything you need to know to make, decorate and assemble tiered/stacked/layer cakes:
http://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!
It's a long read, so you might want to grab a beverage and get comfy. 
HTH
Here are my favorite recipes and the are all from here:
Butter Cream Icing: http://cakecentral.com/recipes/5313/sugarshacks-buttercream-icing
Cream Cheese Decorators Icing: http://cakecentral.com/recipes/6817/wedding-crusting-cream-cheese-frosting
Royal Icing: http://cakecentral.com/recipes/1983/antonia74-royal-icing
White Cake Recipe (this recipe can be tweaked to make all kinds of flavored cakes) : http://cakecentral.com/recipes/7445/the-original-wasc-cake-recipe
Chocolate Cake REcipe: http://cakecentral.com/recipes/7367/amazing-chocolate-wasc-cake
Fondant: http://cakecentral.com/recipes/15170/marshmallow-fondant-3
And alot of people on here like this fondant: http://cakecentral.com/recipes/7432/michele-fosters-updated-fondant
Hope this helped
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