Strongly recommend going to w2aew's youtube channel and looking at the entire list of videos he has available. He has done a lot on the basic operation of scopes like the 2465 (2465, come on man, its in the screenshots you keep posting), as well as some on more advanced usage. You won't find better explanations of how those scopes work than his videos.
Edit: Good videos to start with on his channel:
#2: Tektronix delayed timebase operation
#10: AC / DC Coupling on an Oscilloscope
#11: Tektronix Oscilloscope Triggering controls and their usage
#16: How to use the Oscilloscope to accurate capture 2 signals of different frequencies
#17: Using Analog scope to view two signals of wildly different frequencies
#18: Use Oscilloscope with delayed time base to measure a RF Power detector
#19: How to get a stable scope display with two signals very close in frequency
#25: Analog Oscilloscope bandwidth considerations
#31: Analog oscilloscope ALT, CHOP, ADD, INVERT vertical controls
#33: Oscilloscope AUTO Triggering explained
#35: Using the ADD/INVERT mode on an analog scope to view differential voltages
Just a few out of the first 35, there are many more on his channel