I guess it depends on what work you plan on doing. When i was 19 i completly tore down and rebuilt my 68 289 with help from a video and a book from the library. In fact the book was so helpful that i never did return it but instead told them i lost it and paid them for it. 15 years later i was reading some stuff from that book again when i fired up that motor for the first time. I laugh every time i still see the libraries name sticker on it and the call number. I think this might be the first and last book i have ever read from cover to cover.;D
How to Rebuild Small-Block Ford Engines written by Tom Monroe
http://www.amazon.com/How-Rebuild-Small-Block-Ford-Engines/dp/0912656891
I think i paid at least that 15 years ago! Looking again i see you can buy it used for as little as 8 bucks.