Lightroom is pretty much all I use. I love it. I rarely use Photoshop. I enjoy taking photos. I can't stand editing! Tripod is a must. You can get by without a remote. Just use the 2 second timer so the shutter fires after you push the button. Where was the aperture mentioned? Large apertures are the low numbers, such as f/2.8 etc and the small apertures are the high numbers, such as f/22. Flash can be used very effectively. ON camera flash is considered bad, but off camera flash can give amazing results.