Welcome to the forum, lovesupreme.
Yes, literature specifically about Eastern & Oriental Catholicism is pretty hard to come by. A few recommendations:
101 Questions and Answers on Eastern Catholic Churches [amazon.com] by Deacon Ed Faulk, a long-time member of this forum and dear friend, is an excellent intro. It's aimed at providing Latin Catholics with a better understanding of their Eastern brethren, but anyone looking to know a bit more about us will find it worthwhile.
Eastern Christian Churches [cnewa.org] by Father Ron Roberson can be read on-line at the CNEWA site (it's also available for purchase from CNEWA). It gives a brief, non-polemic, historical view of each of the Eastern & Oriental Churches, Catholic and Orthodox, as well as a brief look at each today.
Eastern Christian Publications [ecpubs.com], a book publishing house owned and operated by Jack Figel, another forum member, has a large variety of books available on most every aspect of Eastern Christianity, Catholic and Orthodox.
The Eastern Catholic Churches: An Introduction to Their Worship and Spirituality [abebooks.com] by Sister Joan Roccasalvo
Madonna House Publications [madonnahouse.org], which publishes the works of the Servant of God Catherine Doherty and Melkite Archbishop Joseph (Raya), both of blessed memory, which are focused on Eastern Catholic spirituality - both Russian and Melkite
Many years,
Neil
