Hi Linda...I would be interested in your camera if the original post is not going to buy it!

My bubble is deflated, but still it has forced me to learn new things for my camera. Also discovered the quick control screen, so that is helping things along. Also, going on a Fall photo tour in Yellowstone, so hopefully I will get more proficient.
So, thanks for the replies. Some were helpful, some not so much!

So, I normally use the Av mode on my camera and can successfully set the iso and f stop. When I move to manual mode...I have the shutter speed and iso, but am unable to set the aperture. I know it's me, but am anxious to try this to capture the moon and Mars tomorrow night. Would like my settings to be f/11...iso/100...shutter/125. Will try to use my remote shutter switch for the first time!
Thank you
BTW...It is a CANON 7D!