ashtanga wrote:...I've heard a lot about it so I guess I've made a good choice?
If you want a summary of the commentarial understanding of the Abhidhamma dhamma theory, then this seems like your best bet.
Whether that's what you're after will determine whether it's a good choice or not!
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"Whether I were to preach in brief, Sāriputta, or whether I were to preach in detail, Sāriputta, or whether I were to preach both in brief or in detail, Sāriputta, rare are those who understand." (A I 333, Sāriputtasutta)