>>24474898
Oh man, come on. That's overkill for everyone except researchers in gravity and people with differential geometry / forms background.
There are two "main" intro textbooks that can be approached more easily.
Schutz: A First Course in General Relativity. This is the one I used when I took the course (back then it was a 2nd edition, I believe there's a 3rd now).
Carroll: Spacetime and Geometry: An Introduction to General Relativity
I avoided this book for a long time because Carroll has a reputation as a pop-science monger, but I've warmed up to it in the past year or two. This was written before he got any traction on his pop writing, and it has some useful bonuses that resonate with me (a chapter on curved space QFT). I'm on the QFT side looking at relativity as a secondary topic, so it's a nice perspective for me. I can't judge how it would be for a beginner because I already knew lots of the topic by the time I opened this book.
Either of those will probably be overkill for you, given your lack of direction in asking the question. It can't really be made easier than that, though. I'd look into one of those (and ignore shit like Leonard Susskind's cheesy, flippant "light novel" books).
And after that initial treatment, yes, you get Gravitation by MTW. It's a treat. Don't read the "classics" on this topic, like Einstein (who was a spook). Relativity developed dramatically over the 20th century, and while the popular problem "paradoxes" were solved early, the language with which the field is presented morphed in such a way that it makes some of those paradoxes vanish. They're artefacts of approaching the topic wrong, if you will. Stick to more modern (1970s and on) books.
I'm rambling and you aren't going to read all of this. If you would like to know more, I'd be glad to help.