re: About to Start Game of Thrones- Is it actually that good?

Not a book reader, just a fan of the show-

yes, it's that good. First couple seasons are incredible. There are some storylines that I tired of, but that didn't happen until maybe season 4 or 5 for me, and there are still brilliant episodes (some of the very best) afterwards.

The first 3 seasons are extremely in-depth with the amount of stories building, and the various character arcs.

By all means, avoid spoilers. Don't do it, even if you think you're just getting a taste. Don't read a damn thing online anymore about the show.