Coming from a similar newbie who knocked down about 75 balls this weekend for my first range visit in a long time, I noticed some funky things with my "yardages" (again, these were Titleist range balls, not regular, so take the yardages with a grain of salt). Not as bad as yours, but I did notice that while I could manage to hit my 5i somewhere around 150, everything above that (3i, 3W, and driver) came within only a few yards of that point on most shots. I can say it was based on not having good contact, though I haven't exactly figured out my wood/driver swing yet either.
I don't really have money for the lessons either, but I'm just going to try to work with what I have... and maybe check out the S&T; stuff tomorrow when I could actually work on some of it around the house.
One thing I do wonder about all of this advice and such is that if you're not really out there taking lessons, is it more of just trying to commit yourself to a certain mindset, taking away a little point here and there that you can focus on a step at a time from these videos/pieces of advice, or is there another way to basically absorb all of it? I understand a good bit of the jargon, but it's not like at this point I can automatically figure out "Hey, I'm totally not doing this correctly, so instead, I'm going to do this and this and this to correct it." Maybe that'll come in time, but it's still a bit confusing as to how I should go about getting to the point where I'm adequately mimicking what I ought to be doing. :P