Goal: produce a line graph with these conditions

* multiple lines (series) of K

** going across the graph using X data (horizontal axis)

*** by Y (vertical axis)

i don't know what to look for. the information out there is a mess, and it's hard to separate the garbage from the quality, so i really really prefer a link to a guide/article/video. if you could link that, it would be great

there are many ways to do this, but is the best way?

excel 2010, win