The new portal at
developer.couchbase.com should be an easier way to get started; at least that’s the intention. (It’s not 100% complete yet.)
“NoSQL” isn’t a single thing, really — it encompasses several different types of databases and query systems. The core concepts behind Couchbase Lite are JSON, map/reduce, multiversion concurrency control (MVCC), and replication.
Dive in, have fun, and ask questions here if you need help.
—Jens