I just wanted to drop in here and say a quick hello and introduce myself. I recently took the plunge and bought ZBrush after taking a look at the demo for a while. What a great piece of software! I look forward to sharing my creations. 
welcome to the wonderful world of zbrush!
it’ll be about 2 years before you get a good nights sleep…you’ll keep waking up to see if you can do that in zbrush!
enjoy!