I just started fresh with a 32 GB SD on a raspberry pi 3 running raspian.
I used the install code provided on the main site - and everything ran through successfully without error.
My question (which may be extremely dumb) is now what? Most sites I visit say to just open your browser (Chromium) and to go to localhost (or localhost/MagicMirror). I’ve tried both and I get the sad page of “This site can’t be reached”
I tried rebooting just in case I missed something or something was weird. I changed the config file to  for all ipaddresses in the whitelist.
I read a few forums which mentioned typing out the specifc ip - which I did using ifconfig as a lookup but still no avail with that (nor with adding :8000) on the end of it.
Am i missing something completely? Any ideas on what I’m doing wrong?
Thank you for any and all help to someone trying to get into the hobby of raspberry pis.