AutoCad Question?

Hi, i'm a 16 year old student attending high school. i plan on going to college to become an architect and i was looking to use this cad program. I am in CAD in school right now and we use this program. My school will not give it to me and me and my parents cant afford to buy the software. Could anyone please help me and give me suggestions? I have already used the 30 day trial and I want to get to know the program better for my future job. If anyone has this program could you maybe send me the serial number and activation code? if so email me at brandonstone@twcny.rr.com. If you don't want to send it could you please give me some suggestions?