Well i used to own one too... Set it to Aperture priority (F1.8) and preferably use a tripod would be sufficient. The noise(sound) generated from the lens focussing was kinda scary at first. Hehe. Cheers!
Set to tungsten WB lor. I think sometimes bo bian, must buy a cheap $40 autothyristor flash so that you can bounce (the C5050 has hotshoe) or shoot without flash. Direct flash really makes table group photos look funny as the table usually is quite white and reflective and so the foreground looks all washed out.