There are a variety of Photoshop software products so how much you pay depends on what you’re getting. Some are a one time pay while others are subscriptions based. A popular combination is Adobe Photoshop CC + Lightroom. If you don’t want to deal with any subscriptions, you can get their Adobe Photoshop Elements & Premiere for a one time cost.
So what’s the difference? Well, Photoshop Elements is the “lite” version of the Photoshop CC. Most people how use Photoshop CC only use a tiny fraction of what the program is actually capable of. For the average user, a lot of the functions in CC isn’t needed. This is where Elements come in. It’s more for people just starting out and intermediate level Photoshop users.
If you just want to do simple photo manipulation work, get Elements. It’s a bit more user friendly. Many teachers and people who are into scrapbooking use Elements. If you’re a professional or an advanced user, Photoshop CC is better. Retouch artists and Hollywood studio professionals use CC.
If you want some that’s easier to use with a lower learning curve and your goal is just to make the pictures you take look better through light manipulation, then Lightroom is what you want. Photoshop takes a lot of time to learn and unless you’re planning to do the things only Photoshop can do then Lightroom may be a better choice.
Here is an awesome video series which will teach you how to use Lightroom.
This series has dozens of videos that will teach you the ins and outs of Lightroom but for most people, the first 2 or 3 videos is enough to know how to make your pictures better.
Adobe Photoshop Lightroom is a photo processor and image organizer developed by Adobe Systems for Windows and macOS. It allows viewing, organizing and retouching large numbers of digital images. Lightroom’s edits are non-destructive. Despite sharing its name with Adobe Photoshop, it cannot perform many Photoshop functions such as doctoring (adding, removing or altering the appearance of individual image items), rendering text or 3D objects on images, or modifying individual video frames.
So if you want to do all the cool stuff that people do with Photoshop, you’ll need Photoshop. To do things like change the brightness of pictures, remove red eyes or pimples from a face or other simple things of that nature, then Lightroom might be a better choice.