If you're looking at the free version, and you need to make any customizations to the front-end, look elsewhere.
Sorry for your frustrating experience but we have a comprehensive documentation at http://docs.yootheme.com where you can also ask questions in the comments.
It also seems that you are using ZOO 1.0. Please upgrade to ZOO 2.0. There is only one free version for ZOO 2.0 and it is the same as for members who purchased the app bundle.
Besides this you doesn't mentioned any real issues you had...