Ask HN: Zen and the Art of Motorcycle Maintenance

After an initial (and failed) attempt at reading ZTMM I've spent the morning reading more about Pirsig's Metaphysics of Quality and Philosophy in general.

I will freely admit to being somewhat ignorant in terms of philosophy but would love to broaden my horizons and have been told that ZAMM is a good introduction.

What I would like to know is are they any good accompaniments to the book or other writings that would ease my journey into the world of philosophy?