The advice from Charles and Viv is certainly true,
I just had a quick scan through the manuals for the S5 IS
, yes, manuals
there are 2 of them, a basic and advanced version.
If you are new to "serious" photography you should lock the advanced manual away. Learn the basic manual in some detail and take lots of photos at the various settings.
All kinds of subjects not just aviation. Analyse those photos see what works what doesn't.
The beauty of digital photography is all the settings, shutter speed, aperture, ISO even time of day are available for you to learn from.
When you have that nailed, then start on the Advanced manual.
The tough part, that will only teach you how to use the camera not how to make a photograph, for that you will need the books, possibly a photography course, certainly some dedication and experience.
Books, look for authors such as John Hedgcoe, Michael Freeman perhaps even Ansel Adams, there are litterally thousands.
If your camera sends text messages, that could explain why your photos are rubbish!