Thanks.
I have a Nikon D50 and I shoot through a Sigma 50-500mm DG lens. Shutter speed depends on a number of factors. For jets, I typically shoot at 1/1000 of a second, mainly because there is nothing moving on the jet to move. For prop planes in the sky, I go anywhere from about 1/250 to 1/500, depending on how much zoom I am using, lighting and how fast the plane is travelling.
I do use auto-ISO, as it is a nice feature on the Nikon and I sometimes have a tendency to over-expose, so it's nice to have the ISO adjust accordingly.
I do use photoshop. I mainly use it to resize the image, maybe adjust brightness/contrast or shadow/highlights. If I have to spend too much time on the image, it's just not going to happen. And when resizing images smaller, you may want to sharpen slightly to bring out details that can get lost when resizing.
For photoshop hints, well, I am not sure what to tell you. There is so much to the software and I am still learning as I go...after 2 years of using it! There are a lot of good tutorials and such online to teach you different things.
Glad you enjoyed the shots. More to come as the year goes on.