When given the option, read the instructions, and save for future reference. (A URL / bookmark doesn't count as saving unless you control the hostname (including DNS).)
I have a plastic container where I put all instruction manuals plus hardware that comes with it that I don't need right then. It was very useful when I decided to mount my soundbar a decade after I bought it and knew exactly where the mounting clips and template were. Any time I need to check the manual for specs or something, I just need to look through a pile and will find it.