Do I need both ToP and SSHE

[Gonso]

ToP should be read by every poker player regardless of game, and there is no substitute for it (although a lot of the material does appear in other sources).

SSHE is a very practical LHE book. It easily applies to all of the limits most players here are concerned about. It's had a couple critics that say some of the smaller stakes don't resemble the descriptions of the games in the book (and there is some truth to that), but it's very sound.