You can get the 1995 UK reprint of "In the ring of the rise" from Coch y Bonddhu books for £17.95 and recently it was on offer cheaper. I bought a copy and very good it is, although I found it more like a series of very good linked essays on river fishing topics than a single flowing narrative.
As has been said, Lapsley offers a good simple "soup to nuts" for UK river fly fishers, and O'Reilly is a peerless refernce book because it cuts through a lot of the entomology cant...he advises you can go into the subject as deeply or not as you wish and still catch.
Incidentally I saw from Charles Jardine's intro to "ring...." that Marinaro was "a crusty, opinionated gent with unshakeable faith in his theories". He'd have got on well with one or two folks on here, then