first off DONT install ...just get the zip ~ extract to a fav place (mine goto c:blender just avoid program files )

make a folder for all addons , open blender preffs and set addons folder you just made as default

for extra protection save a "startup.blend" then if you forget to hit copy preffs just open "startup.blend" with load UI ticked  

keep at least 2 or 3 older blenders ready to use ;-) sometimes addons can take a while to get updated ......... doing something in an older version then appending to new blender can save time and hairpulling lol  

 

ps I had much the same reaction as unbroken ;-) [DONT KNOCK THE BLENDER rofl] but I've seen maxM around and about and knew (s)he didn't mean it THAT way  lol and to be fair if I go in a max forum and just smell of blender I'd need a Kevlar jacket ;-)