One thing conspicuously absent from the excellent advice so far; get in shape. Hoofing your body, gear and meat up, down and around the mountains will possibly test your physical and emotional endurance in ways no other physical activity will. Even a couch potato under 40 yrs of age can make it into the alpine without epic problems, but whether they'll be effective or have a good time doing it once there is an other matter.
Like others have said, start relatively small within your known capabilities and ramp up from there. Mtn camp craft is something that seems to take a lot out of people while they're learning to be comfortable in the mountains over multiple days.
wRT google Earth; while an excellent tool for finding good habitat, I find you have to be careful making too many judgements about alpine terrain from it alone. It seems to smooth over quite aggressive, sometimes impassable features. Learning to read a Topo map competently is probably the best thing you can do to ensure the safety of yourself and others in the backcountry. It'll certainly make you a more effective hunter as well. Use a map with a 1:50k ratio or less to plan and ultimately execute your trip.
Good luck! Nothing like being above the tree line from sunset to sunrise.