Go to every site to gather all you can regarding your own artist background in the Biography sites. Look at the artist's works in the Galleries, and understand the defintion of Impressionism/Post-Impresionism. Keep good notes as they will be used for your Critique of the artist. There are two artist in this site and each one has its own bibliographies, galleries, and definitions.
BIOGRAPHIES FOR GEORGES SEURAT http://www.oceansbridge.com/artist-biography/seurat.php
http://www.artchive.com/artchive/S/seurat.html
http://www.incwell.com/Biographies/Seurat.html
http://www.artelino.com/articles/georges_seurat.asp
http://www.abcgallery.com/S/seurat/seuratbio.html
GALLERIES OF GEORGES SEURAT http://www.artcyclopedia.com/artists/seurat_georges.html
http://www.artchive.com//artchive/S/seurat.html
http://www.ibiblio.org/wm/paint/auth/seurat/
http://www.nga.gov/cgi-bin/psearch?Request=S&Name=seurat&Title=&imageset=1
DEFINITIONS OF IMPRESSIONISM/POST-IMPRESSIONISM/POINTALISM http://www.ibiblio.org/wm/paint/glo/impressionism/
http://www.artcyclopedia.com/history/impressionism.html
http://www.artcyclopedia.com/history/pointillism.html
BIOGRAPHIES OF PIERRE-AUGUSTE RENOIR http://www.impressionniste.net/renoir_auguste.htm
http://www.artchive.com/artchive/R/renoir.html
http://www.ibiblio.org/wm/paint/auth/renoir/
GALLERIES OF PIERRE-AUGUSTE RENOIR http://artchive.com/artchive/R/renoir.html
http://artcyclopedia.com/artists/renoir_pierre-auguste.html
http://www.nga.gov/cgi-bin/psearch?Request=S&Name=renoir&Title=&imageset=1
DEFINITIONS OF IMPRESSIONISM/POST-IMPRESSIONISM http://www.ibiblio.org/wm/paint/glo/impressionism/