I'm pretty rusty on Numenera myself, so it sounds like I'll fit right in :)
Other than just dusting off the old hardcover, the Cypher Speak podcast did a great 12 minute
Rules Primer episode for anyone wishing to brush up or learn the core mechanics of any Cypher System game, including Numenera. In general, the Cypher Speak podcast is fantastic; Troy and Darcy are two of the best hosts in RPG podcasting.