Don't have the manual handy, but.
Boom: Concentrate on economy, usually means make alot of fishing boats in age 2 or doing a Fast Fortress and make 3TCs.
Turtle: Concentrate on defence first, then economy. As far as I know only the Dutch and Port HCs can truely turtle, neither of these HCs have to leave the safty zone of their TCs to get resources.
Rush: Attack fast and early, usually around the 5-6 minute mark in the game, this attack will continue till you give up . If you attack only once then retreat it could be considered more as a raid or a failed rush.
[EEX] Nullpointer
Canadian Gamer