Looking up Nikon D300s and found these very helpful videos
http://www.youtube.com/watch?v=H0UCyt5MVEQ
http://www.youtube.com/watch?NR=1&feature=endscreen&v=gx0F429bhJo
http://www.youtube.com/watch?feature=endscreen&NR=1&v=DFRATixZ3fY
http://www.youtube.com/watch?NR=1&feature=endscreen&v=V1EKoha-YFQ
the last two aren't useful to me but it's part of the set
http://www.youtube.com/watch?v=5i2SHrUY9Ds&feature=endscreen&NR=1
http://www.youtube.com/watch?NR=1&feature=endscreen&v=Pq8oK2VX8sg
http://www.youtube.com/watch?v=H0UCyt5MVEQ
http://www.youtube.com/watch?NR=1&feature=endscreen&v=gx0F429bhJo
http://www.youtube.com/watch?feature=endscreen&NR=1&v=DFRATixZ3fY
http://www.youtube.com/watch?NR=1&feature=endscreen&v=V1EKoha-YFQ
the last two aren't useful to me but it's part of the set
http://www.youtube.com/watch?v=5i2SHrUY9Ds&feature=endscreen&NR=1
http://www.youtube.com/watch?NR=1&feature=endscreen&v=Pq8oK2VX8sg