thanks for the nice videos and links guys

I agree... he was so prolific. I think he is also a prime example of a constantly developing artist... So many artists struggle to 'find' themselves, struggling to find their own style than just letting it come through naturally.
a look at his changes in style...
portrait of his mother, 1896
naturalist/realistic style...
the blue period. this painting,
1903.
naturalist with depressing themes, colours
starting
'cubism'. 1907.
things are fragmented...
can hardly see the figures now.
1910.
starting to use more collage...
guitar 1913.
style is flatter.
surrealist influence?
torero 1919.
going back to naturalism...
lovers 1923.
figures are more curvaceous and painting is soft and pastel-like.
to the style most people know him by...
marie therese walter 1937.
http://www.abcgallery.com/P/picasso/picasso.html