Entertaining in a time-capsule sort of way, heartbreaking a bit that some things haven't changed that the authors noted needed changing even in the mid 1960s, and completely beyond wonderful that some of the things they couldn't yet fathom have changed, for the best. Great how-to on a lot of things new or recently observant Jews may not even know how to ask.
Pros: Accessible (though good luck on finding a copy these days, Amazon does have a few. E-bay is a good option, surprisingly) in that they cover a wide range of Jewish beliefs and levels/ways of observance.
Cons: A bit too hippie-woo for my general taste. At the same time, they already had the mystical paths they seem to be searching for built in and didn't take them. Classical Hasidism largely discounted, although some authors got mention.
Recommended, but to select crowd. Better for folks who already have read a bit of other material, as much is very outdated (still worth a read, just good for new folks to know we've grown).