Can any1 tell me a few classical guitar masterpieces? and artists please?

There are several by Baroque composers such as Vivaldi. There are wonderful recordings by such players as Andres Segovia.

You could start your search at the link below

Rodrigo's guitar concerto and anything by Fernando Sor.
You can check them out on you tube.

Also look at the Chinese Classical guitarist "Li jie". She has a number of clips on youtube....worth a look.

Sharon Isbin is a truly great classical guitar. She has an advantage over Segovia - she is stilling living and working.

Joaqu铆n Rodrigo's Concierto de Aranjuez recorded by Isbin and The New York Phil. is a great piece.

Some classical guitar masterpiece:
"Recuerdos de la Alhambra" - F. Tarrega
"Capricho Arabe" - F. Tarrega

Notable guitarists:
Andres Segovia
John Williams
Christopher Parkening
Sudirman Leman