My first LP purchases (not counting 45's) were (all at one time):
- Sly and the Family Stones Greatest Hits (still great)
- Led Zeppelin III (not one of their best, but still very good)
- James Gang - Rides Again (not bad - highlight is "Funk 49")
I think I didn't convert over to CD until 1987. I'm not sure what the first CD purchase was, but it might have been the Beatles "Help!", since the CD was the 14-song UK version. Actually, although critics seem to view the best Beatles albums as Sgt. Pepper, or sometimes Revolver, the White Album, or even Abbey Road, over time I have come to like the UK version of Help! the best. Sure its pretty "poppy", but uniformly excellent.
Actually, this reminds me that the first 45 I bought was the Beatles - "Nowhere Man" as the A side, and "What Goes On" as the B-side. "What Goes On" is actually a great little Rockabilly song, with Ringo fully exercising his half-octave vocal range, and great little 2 or 3-note trebly guitar fills from George, in a Carl Perkins style. I must have been about 10 years old at the time.