Forum has a Blind Guardian thread I made a good choice signing up here.
Got into BG earlier this year, picked up "Nightfall...", "Imaginations..." & "At The Edge Of Time" and love them all - even though "At..." is OTT and a tad introverted.
Friend of mine recommends thier Live album which I keep meaning to pick up as well.
Glad you are liking it here. Got plenty of great metal threads. If you want to find them here is the index for them.
List of Metal official threads
As for BG albums, so good to see fans of Nightfall though. I love all their albums I heard so far but Nightfall and Imaginations are both fantastic albums.