Awesome, Monkey. Welcome to the world of Z-brush. You won't regret the purchase. I hope you have a wacom tablet, or an equivalent pen tablet that is pressure-sensitive, cause sculpting with a mouse is like trying to paint with a stick. 

I don't know why they removed the free trial. That's rather retarded on their part. It's always been there for as long as I can remember. Maybe it has something to do with people trying to crack it. I hope it means they're getting close to releasing zb5 tho - which they've promised will be 64-bit, finally. 

I strongly recommend you spend some time viewing all of their tutorial videos. Start from the beginning and work your way through. They're rather short, most of them, but it should get you familiar enough to start getting comfortable. there is a rather steep learning curve, but once you get past that you should be fine.

 

~Shane