Collecting is a hobby of the mind. Ancient coins are just artistic pieces of metal if you know nothing about them. However, they are fascinating if you know enough to appreciate them. To help you appreciate Byzantine coins, I have published a web page with Byzantine coin references. It has an extensive list of web sites, followed by an annotated list of books, followed by a list of sale catalogs that emphasize Byzantine coins. http://augustuscoins.com/ed/catalogs/Byzantine.html CoinTalk is a great educational resource. Almost every thread has information that makes coins of its topic more interesting. My web page does not link to CT discussions; you can look for them by searching this forum. Many of us are old and began collecting in the age of books and paper sale catalogs. Now we are in the web-site age of reference works. I'll bet many CT members have few books and know what they know because of the web. My site will help. If you are an advanced collector of Byzantine coins, I call your attention to the relatively new series (2015 and later) of massive books on "Byzantine Coinage in Italy" in three volumes and "Byzantine Coinage in Africa in Spain," bilingual in Italian and English, which I write about on that page. Pile on with comments about Byzantine-coin references!