Simple Graph Howto?

I have been looking at all of the graph options. They all look very complicated and I dont know where to put my data in:

What I want to do I have four places that I get datafrom by date and time. What I would like to do is to make a graph by switch and then by time. So X is hours 1,2,3,4 through 24 and then number of entries which should be 1 through 20 entries. How would I start to do this. eventually I will pull the data from a database but for right now I want to create a simple graph.

Thank you,




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Simple Graph Howto?