Hy Guys, sorry for the kind of post, but I don't really know where to ask...

I am from italy (so forgive my english) I am a drawer and a modeler since I was 8 years old and thanks to a website I started to make research on 3D design. I found out that there is a lot of information and material on the web but very little "orientation for beginners". There are of course tutorials but I am looking more for some basic info. Ok so I kinda decided to go for Vue10. Now my questions are:
What are the main differences between Vue 10 Frontier and Vue 10 Complete? (like is Vue 10 Frontier alone enough for an amateur or would I end up needing so many extras that it would be better to get the complete version at first)
Does Vue10 allow you to create single characters or would you use DAZ 4 for that? What about bigger populations?
Is Vue 10 (complete or frontier) enough for buildings and cities or would I need the Cityengine?
Thanks for your time! I would really need some basic directions because they are hard to find and I don't want to make the wrong investments due to my ignorance
Thanks again!!!