First Post- what not to do

The first post from someone who is an authority on a subject should be offering that advice to anyone who can use it. We benefit only from those who share their wisdom, if in fact that wisdom is bonafide. 

Don't buy new tubes for your new tube amplifier before you even listen to it with the ones it came with.  

Don't let anyone use your turntable, unless they own one themselves.

Don't place your speakers where they look best and presume that's where they will sound best.

Do NOT under any circumstances ever ever get your fingers across the speaker field coil output of an old Wurlitzer vacuum tube jukebox!