Just found these 8 short notes by Dr Howard Johnson for lecroy.
This may have been posted already but I couldn't find it with a quick search
http://teledynelecroy.com/support/techlib/signalintegrityfundamentals.aspx?capid=106&mid=528&smid=661The 8 articles
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Step Response Test - Using The Step Response To Analyze A Signal Channel
Confirm Diagnosis - Using The Step Response Along With The Circuit Layout To Isolate And Fix Signal Reflections
Adequate Bandwidth - How Much Oscilloscope Bandwidth Is Required To Measure My Signal Accurately?
DC Loading - Verifying The Affect Of Probe DC Loading On Measurements
Why Is That? - Exploring A Signal Waveshape To Uncover Sources Of Distortions Caused By Loading
Jitter Characterization - Explaining the fundamentals of jitter and jitter measurements
Jitter Creation - If you are just learning to make jitter measurements, begin with a calibrated source of jittery data.
Jitter Capture - The practical measurement of jitter
As you can see it requires registration

I could zip them and attach (about 2M) just not sure on the ethics