do yourself a favour and dont get a harley as a first bike. they can look cool and sound great but they are a pig to handle / ride and wont make your learning experience very enjoyable or easy. yes you will have passed your test and you may think thats all the learning you need to do but believe me you will continue to learn and make mistakes for a very long time after passing your test
i have ridden for years.... ZZR 600, Bandit 1200, Exup 1000, TL1000s (prob the most fun i have had on two / one wheel), ZX9r, and 2 different ZX12r (fastest i have ever been!) and have also had the pleasure and at the same time dissapointment of riding a Harley Fat Boy (Terminator bike) while in the states one year. dont get me wrong it was great! loads of noise burbling round town but as soon as you got it up to any speed or into any corner it was aweful to the point of being quite hard to ride) having spoken to a few guys that have ridden both they all say the same thing.
the advice above about getting something like a fazer 600 or the like for a first bike is spot on! the handling and the bikes manners will help you not hinder. also i hate to say this but you WILL drop your first bike at some point... it just will happen... prob better to drop an unfaired and possibly well crash protected and cheap to repair fazer 600 than a quite expensive to repair Hardly ableson
every year i toy with giving up the bikes... and every spring on my first ride out of the year i remember why i love em!
good luck and safe riding whatever you decide to get