While there is going to be a learning curve for any post processing program you get, it might be a good idea to consider the difference between the two you mention.

PS is designed to enable you to "work on" one image at a time, and gives you a myriad of powerful tools to manipulate the image in all kinds of ways. LR has some pretty powerful post processing capabilities (though not nearly as many as PS) but includes the ability to catalog and store your photos so that you can retrieve them more efficiently in the future.

It's not hard to accumulate thousands of image files once you get into photography, and since your camera will give them generic names like DCS_5643 over time it becomes rather difficult to quickly find the shots you took on Ellis island while you were vacationing in NYC 3 years ago... or whatever. LR (and other programs of it ilk) is designed to enable you to rename the files as well as apply metadata like keywords to the images, to make searches in the future simpler. Meanwhile, basic editing like cropping, color correction, healing tools and others are part of it's post processing repertoire.

Of course, the CC version Adobe offers costs $10/month (in the US - not sure where you are) and that includes both LR and PS, so that might be something to consider. And to be clear, the "cloud" part of the CC thing does not mean that you need internet access in order to work in the programs; you download both PS and LR to your computer and so long as they can "phone home" once a month or so to confirm that you are still paying your monthly they will work just like the stand-alone versions. Just sayin'