Someone gave me this equipment now what do i do with it?

So my gf's brother gave me this hydro setup he didn't have use for anymore. I have never used anything like this and would just like some beginner info like some links for cheap nutes, when to use and how much, it came with some hydroton also.
Pretty much just the odds and ends i will need for a successful grow using this box, i have light and this stuff in the pics.2011-12-29 20-48-41.434.jpg2011-12-29 20-49-01.914.jpg
Something else im not sure about is the pump supposed to be always on on this setup? He never mentioned a timer, so im assuming it just sprays the baskets nonstop?
 

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