A Lightroom subscription is $120 a year. May want to start with something like Photoshop Elements, which I think is half that for one-time purchase.
+1 on Photoshop Elements. It is the same interface as Lightroom/Photoshop CC so if you do decide to move up to those programs the learning curve will be much easier. What got me started on digital photography was taking a class in Photoshop Elements. I was completely blown away and astonished at what that software can do.
Many pros get by with just Elements as it does 90% of what Lightroom/Photoshop CC can do but not as efficiently. I did eventually move up as that last 10% does get you some effects that are difficult to impossible to do in Elements. I think Elements is terrific software and anyone with even a mild interest in photography should have a copy. New versions are incremental in features, not usually anything groundbreaking from one version to the next. So if you find a legit copy a version or two old on eBay or somewhere for cheap go ahead and grab that.
As for books, I am a big fan of Scott Kelby's books for beginners. While I agree that taking a course or three at the local community college is the best choice to start, that is not an option for everyone and books cover the topics in more detail, and you can go back and look up stuff that is fuzzy to you, at least that was my experience. The classes I took were about two hours, once a week for four weeks, the "adult ed" type classes, not for degree-seeking students.
Some book suggestions:
Kelby's book on Elements:
https://www.amazon.com/Photoshop-El...keywords=scott+kelby+books+Photoshop+elements
I also ended up buying Kelby's boxed set (a much earlier version) but of course each book is available separately.
https://www.amazon.com/Scott-Kelbys...=1508879905&sr=1-3&keywords=scott+kelby+books
As you can see from the Elements books he does update them for each version.