Where can I find some solved exercises about duality, projective transformations, conics, quadrics?? help me :confused:

Are these what you're looking for?

http://dmg.tuwien.ac.at/havlicek/pgeom.html

http://64.233.167.104/search?q=cache:IeyVFs5gnQgJ:www.math.utexas.edu/~hausel/hitchin/hitchinnotes/Projective_geometry/Chapter_2_Quadrics.pdf+exercises+duality,+conics,+ quadrics&hl=en&gl=us&ct=clnk&cd=4

http://64.233.167.104/search?q=cache:bEkxcW_8YSkJ:www.bsz-bw.de/rekla/show.php%3Fmode%3Dsource%26eid%3Duni_0_09942066-1inh+exercises+duality,+conics,+quadrics&hl=en&gl=us&ct=clnk&cd=6

http://64.233.167.104/search?q=cache:yqFpiM_kqasJ:math.stanford.edu/~vakil/216/216class35.pdf+exercises+duality,+conics,+quadrics&hl=en&gl=us&ct=clnk&cd=5