Questions about lost! Help, please?

In lost, how did the others get there on the island? what is the dharma initiative? what's up with the different stations and hatches?

you need to watch from the start-you can rent them by the season

The Others"appear to be an evolved continue of the Hostiles."The Hostiles were on the Island before the Dharma Initiative arrived and we don't know anything about them before that."The DHARMA Initiative (Department of Heuristics And Research on Material Applications Initiative) is a scientific research project, which had a large presence on the Island during the 1970s and 1980s."..."Most information on the project is derived from the Swan Orientation film and the ARG The Lost Experience."..."The DHARMA Initiative conducted its research and activities on the Island through a series of stations. They all have (or have had) power (from an unknown source) and a water supply as well as various kinds of equipment (e.g. machinery, living quarters, computers, medical equipment, etc). Each facility also has its own octagon-shaped logo, utilizing a different symbol to designate which station items or personnel correspond to."