i just got the plugin today evry one i no keeps teling me to use to so not i hit a Wall... theis bit am lost on
If you want use this plugin on first world (name "world" by default)

Stop server
Edit bukkit.yml to adding

worlds:
  your_world_name:
    generator: TerrainControl

the edit bukkit.yml to add? where abouts do i add it ? do i just add it at the top or something?
or is there a video i can use to show me how the plugin works?

Ask on plugin forum.