I'm still in the market for advice on this.
I'm slowly sorting the stamp heap on weekends and breaks, and thus far have come up with a system-
By country, then by value, then by size/orientation instead of by year. Since I haven't got a stamp referance book, sorting by size/orientation lets me tell at a glance if I've got something already in the stock book. I've been stacking duplicates for now until I can come up with a better idea. Thus far, about 80% of the US stamps are sorted- and I'm falling in love with the wide-format 3c stamps.
First three pages-



I know there are as many ways to organize stamps as there are people to organize them- this is what has worked best for me so far. (Though I'm now out of room in the existing books and have resorted to sorting other countries into envelopes in a shoe-box.)
If I'm doing anything particularly horrendous, please shout! I'd rather get told off for being a silly newbie than ruin some fun stamp by ignorance.