In MapLess the namespace MapLess contains all public classes you need to use (don't worry if you didn't get everything from description, they will be explained more as you go on):
Db<>: this is an optinal class to connect to database and get the result you want to map.AliasAttribute: this is an optional attribute you apply to property to give it multiple names.ConcreteAttribute: this attribute mark interface to be used by MapLess.TypeMap<>: this class used to map interface to database result.MapManager: this class contains helper functions that affect the behavior of the library.
Before diving into examples you need to know that ConcreteAttribute and TypeMap<> are the only essential components you need to use, however if you want to go with this option you might need to consider executing IDbCommand.ExecuteReader with option CommandBehavior.SequentialAccess for best performance.
Please refer to Basic Example from Example section in Documentation page.