If you're a new fan of Black Sabbath and don't know where to start, you should off with this CD or if you're on a budget or only want the stuff with Ozzy, get Symptom of the Universe 1970-78 instead, and to be honest with you, this was the CD that got me involved with Black Sabbath cause they're one of the best and most influential bands of all time and their only hit singles were Paranoid and Iron Man and a lot of there other songs were awesome as well, The CD contains songs from their self titled debut album to there 1987 release Eternal Idol and I think that they should've stopped after either The Mob Rules or Born Again and add more songs to Sabbath Bloody Sabbath (which only contains the title track and Killing Yourself to Live) and a little more on Never Say Die (which only contains the title track and Hard Road).
This CD also doesn't have Fairies Wear Boots and I honestly don't know why.
If you love Metallica, Stone Temple Pilots, Soundgarden, Chevelle, Marilyn Manson, and those 1990's alternative rock bands then you should get into Black Sabbath cause they are the godfathers of heavy metal and half of those bands weren't even exist if it weren't for Black Sabbath.