Yard work

So, I did some yard work, which included raking, picking up what was left over from the storm last month such as broken branches, and carrying the filled bags.  That was over an hour and a half of work, that was over 12 points today for Weight Watchers.  Unfortunately I don't know how many calories that is.  I would like to buy a treadmill or some other exercise equipment such as weights.  I have heard that strength training is supposed to be good for me.