As expected from Harry Anderson, it's full of good stuff. Well worth a read.
There is so much good stuff in here that it's well worth the price.
This is a wonderful resource, full of many excellent tricks and some fun thinking on all sorts of topics. For the price, it's hard to beat.
An interesting routine, and probably worked as written when it came out. However, in order to work it now, you would need to rethink a few of the cards as they either look radically different or just aren't really in use. As to method, well, you probably know what it is if you read the description of the effect, and I will say that unfortunately there aren't any particular insights on the method at least as far as playing cards are concerned.
I think it was probably excellent when it came out, but you would need to do a lot of work if you wanted to do it now.