I'm also a late comer to chess. I told my coach I didn't want to have to learn a lot of theory, he recommended the King's Indian Attack as White, and either the King's Indian Defense (to 1. d4), or the Black Lion (much like the Pirc) in response to 1. e4.
I have worked with all of these and become comfortable with them. Since they are all systems, the initial moves are pretty standard, and not so dependent on your opponents opening moves.
I'm a late learner of chess in life currently 1200. I've been scratching around with openings for B&W. Seems everyone has an opinion. Recently i was advised by a 2000+ player to try the Benko. I've found it too difficult to comprehend with my miniscule knowledge & skill.
Then I read in another thread to a similar question the replies came back to the poster "for anyone from 1200 to 1800, the best book to start off your chess career is QGD by Matthew Sadler". Why? Because its simple & easy to understand at my level. downloaded the PDF - seems just what a novice needs. So i'm ordering the book.
now it seems The Queen's Gambit will cover my play as white & as black to d4. So do I understand it right, I now just need a simple lower-level setup to repel 1.e4? So what is a simple system to respond to e4 that's within the comprehension of a 1200-1500 novice?? I'd rather have something common but easy to play than something fancy & off-beat & continually get tangled up. Been there - done that.