You can do this alone, but you better be in good shape! You can die out there if you get lost, or you get so stuck you work too hard to get out.
I suggest that you find others who have done this and take it slow....working up to more and more difficult.
Rule 1:
Be prepared....shovel, rope, winch (if you ride yamaha...

) food, matches, the works....things happen and you need to plan ahead not for the if....but for the inevitable.
Rule 2:
Novices should NEVER go alone....take others who can help get you unstuck or when the sled decides to self destruct.
Rule 3:
Just because you went over that hill and down thru the meadow last year doesn't mean you can do it under THESE SNOW CONDITIONS. Snow that is set up by means of freezing and thawing and re-freezing, is much easier to go over and thru than 3 feet of fresh powder that has no bottom.
Rule 4:
Momentum is your friend.....once you let off the throttle...it is all over. BUT....when you KNOW that you are going to get stuck....don't stay on the throttle and dig in deeper...it just makes for less going and more digging. Eventually you will learn your sleds capabilities, and your own abilities and when that day comes, you will be able to call yourself a boondocker.
There is nothing else like it.