There are six technology types in TLT
Main tech types: Order; Freedom; Evil
Side tech types: Honor; Faith; Magic
Main tech types normally are the main tech required for a certain race. For example, most Human units require Order tech.
Side tech types normally represent a certain role or battle style. For example, Magic usually corresponds to ranged units.
Before you start constructing, you need to choose a deck totem. This totem will come with a technology point corresponding to the color at the beginning of the game, so it is recommended that you choose the main technology of the corresponding force as the totem.