''Shine On Your Crazy Diamond(part one)'' is a great song by pink floyd. If you can play the first solo in Comfortably Numb, i'm sure you will be able to learn that song too=)
Ofcourse you have ''Wish You Were Here'' too which is one of Pink Floyds best songs imo, and which also is ''easy'' to play.
The guitar solo in Eagles song ''Hotel California'' is a nice solo to learn. Contains much bending:)
''Nothing Else Matters'' by Metallica=P the last solo is fun to play, not very hard
If you want to learn a one- guitar acoustic song by Pink Floyd, you should try to learn ''Is There Anybody Out There''.

smoke on the water easy song great riffs

only pussies learn easy songs first

here

vouch

one intro solo.
the riff from enter sandman.
day tripper by the beatles.
incinerate by elysia. also helps with your alternate picking.
wonderwall.
nirvana come as you are.