I'm very new to photography and I've only used my Olympus SP-55OUZ. I'm expecting my first SLR soon in the mail. A Nikon d90. 1st of all I really need any tips to this camera and main points and adjustments I should make to the settings. I have about 3 seniors wanting pictures made and one couple for engagement pictures. I always wanted to do this professionally but never thought I'd be into it this soon. What should I charge? Whats the average rate for seniors and engagement? I'll post a few pictures I took with my digital olympus. Thank you guys so much!