If anyone cares to share, what's your "secret recipe" for fixing up your photos (adjust on computer, crop, add watermark, resize, add effect, etc)? I'm a wannabe photographer and any insight or tips would be greatly appreciated.
Yes, before you worry about how to edit, #1 learn about exposure: ISO, f-stops and shutter speed and how each one will effect the other and the overall image. If you expose properly, you can shoot JPEG and not go through all the tweaking and adjusting of shooting RAW.
No in camera settings, do any sharpening and contrast or whatever else, afterwards when you can control it.
Effects are interesting but only as a tool for occasional use, when it can be applied in a situation for "effect". Even HDR becomes over used and common after a few shots. (see #1)
Yes the rule of thirds is the rule, but you can train your eye to see things in balance and it will come naturally. People who have previous art training get a free pass and jump ahead of the rest of the world, because art students have already trained their eye for composition. Nice benefit.
I'm being honest when I say, people want to run, before they can walk, and for photography the most important and lasting knowledge is the foundations. Then you can add to that and get get creative and experimental.
As someone who's been shooting since at least the 60s on a regular basis, (I did have a dark room and a borrowed camera before that) the best thing about learning with digital is you don't waste film, you don't have to wait days for processing, you don't need to have a dark room, and if you don't like a shot, or you make a mistake, there's the little button, and it's forever reverted into random electrons somewhere in the Universe.
Shoot, shoot more, shoot some more. It's almost free. Experiment and learn, it's amazing. You might even take notes, but also reading the EXIF data is a wonderful tool to remind you want you did on the shots that failed, just as much as to remind yourself what was right about the shots that worked.
To be honest, after exposure fundamentals and basic composition principles I'd say Lighting is next. And maybe after that editing.
Yes, I'm of the expose to the right 1/3rd of a stop school. You can make blacks darker without noise in the shadows, but you can't make them lighter without creating hash and horrible noise issues.
You can put lipstick on a pig, but it's still a pig. All the editing in the world can't rescue a "pig" image, but it can make a good one look even better.
(opinion...)
But that would be my secret. Start with a good shot.