I don't know if this page has already been shared on this forum before, apologies if it has. It was written in 1995 (so it looks very dated) and last updated in 2007. The page is interesting for anyone new to the hobby(?) but other more experienced users may get something from it too.
Its got a lot of technical information especially on the 'Hardware' page where it goes into detail about laserdisc player and laserdisc care, faults and issues that may arise with either players or discs. I found chapter 11 - Common LD Complaints particularly interesting.
http://www.blam1.com/laserdisc/FAQ/FAQ_intro.htm