I also liked, "The Unschooling Handbook". (I think that's what it's called!). nak.
We are aspiring unschoolers, I guess. We just live life and hang out. I follow ds1's interests (he's 4). I try to answer as many questions as possible to encourage him to stay inquisitive and promote an open environment. I also say, "I don't know" a lot and then we try to find the answers. If he develops interests (Solar System is huge right now), then I take him to the bookstore and let him pick out a book. I try to find library books that are on that subject BUT if he has no interest, then I leave it at that. I don't put any expectations on him to read certain books, do certain activities or master certain skills.
To me, it's totally child-directed learning, but with good modeling on our part, taking the kids to interesting places, and introducing ideas that they wouldn't have thought of (but dropping those ideas if they are not well-received). I like that idea of "strewing their paths". I do that a lot, but I then leave it alone if there's no interest there. DS1 loves building things, so I got him some K'Nex. I look for things that seem to fit his interests. But then, it's up to him to use them if he wants to; he doesn't have to use them, no matter how cool they looked to me.
Also, we try to promote the idea that you can learn a lot of interesting things from life and in the most simple ways. This weekend, we watched ants carry eggs, after my gardening efforts disturbed them. That was learning. It wasn't a workbook activity or a video about ant colonies, but simply watching them was very valuable learning (and fun).
I do sometimes get workbooks, but only because my 4yo likes them. He likes doing mazes, so I'll go get him some more maze books. I'll show him that I got them and then I'll stick them on the shelf with his art stuff. But if he doesn't pick them up, then that's fine.
Oh, like the previous poster, we do limit TV. I've found that if I leave the TV off, everyone is dramatically more pleasant to each other and their imaginative play goes way up. When the TV was on, they were like zombies. Now, they run around the house and do a lot of cooperative pretend-play. They're more innovative in how they use things around the house. They fight less. They seem happier.