When Division Bell came out at least one reviewer commented how hard it was to review the album without seeing it as another Pink Floyd album, to judge it in it's own right rather than as an attempt to recreate Darkside of the Moon or 'be different'
If you had never heard Pink Floyd before this isn't such a daft place to start- One of These Days is quite an opener, and pretty representative of mid period Floyd- without the length some people find hard to take, one from Syd, Fearless was my favourite Floyd song thirty years ago, because it doesn't sound like someone cut it out of a concept album.
Several Species .... would only get on a greatest hits album for the title, but at least it has a sense of humour and if you know your Pierre Henry.
To answer the youngster's question about Quadraphonic sound. In quad hi fi the home listener had two speakers in the front, roughly where yours probably are now, and two at the back forming a square with the listener in the middle. (Pink Floyd performed using the far better one in front, one behind with left and right beside the audience - but I digress). Listen to 'Us and Them', the vocals Up, up, up up and down, down, down, down (in the end it's only round and round and round and round) originally rotated round the room (if you had a quad hi fi) If you listen in stereo the voice goes "up, up" on the left "up up' on the right and so on, because going round in a circle there are two left then two right speakers. Once quad was well and truly dead, and CDs had been out for years, someone undid all that clever maths to stop the quad having "a hole in the middle' and made it sound sensible over to channels, alternating left and right. Atom Heart Mother, Darkside and Wish You Were Here are all quad masters, if you listen for it you can tell!