You not need to edit every shot, but editing can rescue photos you might otherwise erase. I have been using Elements 9 which is excellent. Look at Lightroom also, both a bit less $$ that Photoshop.
Each can be downloaded to your computer to try for a month for free. One easy feature to learn is how to edit things right out of the picture that you do not want in there. You can lighten a dark image, layer photos, merge photos to make panorama shots, turn color photos into black and whites and much more. For example, you might have three images of the same landscape, one too dark another too light, you can merge them to make it just right. I have two books that help me learn what to do. One is "Elements 9 for Dummies"! Ansel Adams edited his photos, so it's okay for you, too!
Many of very useful features can be done quite easily. For example, if you take a photo in RAW, you have several options of white balance that can be looked at with just a click of the mouse. You will have sevearl different looks to the same photo, and you get to choose the one you like best. It is easy to make it lighter or darker, add contrast, tone, saturation, etc. all of which will be come evident to you quite easily. Each step is done with the drag of your mouse and you see how the picture will change right in front of you, back and forth anyway until you see the image you want to save.
Obviously, I am all in favor of these editing programs and there is plenty of online info on how to use them.