I am going to make my first topsey turvey cake on Friday. Should I place cardboard between the layers (4 of them) like I would a wedding cake? The layers will be chocolate and I will be using buttercream for the crumbcoat, but is there anyway to make the fondant taste better?

make your own... MMF is super tasty.... or you can use ChocoPan... it;s white chocolate fondant very tasty also...

Good Luck... I did my very first (AND ONLY) topsy turvy a few months back and it was a disaster.... even after looking at the pictorials and tutorials... there are some good ones on you tube and other blogs....

~I want to work up the nerve to make it again.... I love how cute they come out... too scared.... bbbwaahhhhh ~ lol

I can't help with the fondant question, but yes, you have to put the cardboard beneath each tier. Here's a great tutorial. I followed this exactly, and the cake was very easy to make: