Hi Shaun, welcome to the madhouse.
Add some more info about the bike, km's, year etc... helps those trying to help get to the bottom of things quicker.
You can burn out a clutch on these things trying to accelerate from dead stop too quickly, did mine at 16,0000km. Still on the replacement clutch now at 95,000km, although towing a big fat trailer around Oz didn't help it much.
When taking off, no more than about 2000rpm just to get it rolling to 5-10kph, as soon as it grabs and starts going then you can jam it, just not from a dead start. That'll put you about 1/2-1 sec behind where you might be if on a sportsbike.
Try the 5th gear acceleration trick when you are moving, around 50-60kph put it in 5th and open up quickly, if its slips then its likely you're up for a new clutch.
You can baby it along until its just about gone by careful application of initial acceleration, but at some point it will likely need to be changed.
No need to run around in 5th at low city speeds, just does more bad than good.
5th is really for 80kph and upwards. Mostly mine runs in 4th when commuting.
New clutch options... OEM from BMW or there's an "oil-proof" option from Siebenrock in Germany. I've got one (Siebenrock) sitting in my garage waiting for this clutch to finally give up on me.
Don't be concerned about buying and shipping stuff from the US, Beemerboneyard is very good for that. And Au$ to US$ is still favourable for buying stuff at the moment.
I believe there's a good BMW parts supplier in WA that some guys have used too IIRC.
Drop into the Aus etc forum
for local stuff.