Just getting into Star Trek The Next Generation...

...and I need a little guidance into purchasing this fantastic series! I like to watch Star Trek The Next Generation on Sci Fi whenever I go see my folks (it's still just me and my bunny ears at my apartment). I've been thinking about getting it on DVD and the movies as well. Is this a smart investment? I've really only seen a handful of episodes, and I have no idea what season each one is from. I also don't know where the movies fit in with the series.
Those of you who own the series on DVD—did you buy each one individually? Or is there a complete set? Each season is about $50 on Amazon. Is buying each one individually the way to go?
Any help is much appreciated.
Those of you who own the series on DVD—did you buy each one individually? Or is there a complete set? Each season is about $50 on Amazon. Is buying each one individually the way to go?
Any help is much appreciated.