Fulcro can be too sizable to consume in one bite, most importantly the three core concepts (ident, query, state). Personally I find it useful to start with just EQL which is an Clojure native alternate to Graphql. In fact, Fulcro's predecessor, the famous Om.next was inspired by Graphql. Introduction by Wilker Lucio https://www.youtube.com/watch?v=yyVKf2U8YVg