EQ in Guitar Tracks Pro

I have read, I have looked, and read some more. EQ just escapes me. I think proper eq is 500 db with a low of 3 or 4.. from what I have read.. But, in the vst plugins I have, those numbers are not doable. I have all the free vst plugins I could find, the one I am trying to use is the classic eq, but to no avail. So here is my questions, is this the right vst to use? And if so, do I apply it to say an aux, and turn on all the tracks to that aux? Or, do I bounce all the tracks to one stereo track then, eq that track? any help greatly appreciated.

I appreciate the links south philly... I have looked at numerous times the eq one. My problem is, finding those settings on the vst plugins. Do you use a vst plugin for eq? and if so what one?

I have read and maybe falsely, that a good starting point is 500 db, and something else for the lows... i only picked those numbers to be quite honest on the lows. But every vst plug in for eq I have found (freebies mind you) don't have that type of setting. Your post dudemanjch, clears up one point, I am to put the eq on each separate track, priming it so to speak for the best sound for that track, I was thinking I had to eq the tracks collectively for the mix down so to speak.