If you’re using or planning to use Lightroom mobile for the iPad, do check it out. It’s very well-written, comprehensive, and well-designed visually. Not only will you find out about features that would be difficult to discover on your own, but she has suggested work-arounds for some of Lightroom mobile’s current limitations (such as its lack of star ratings, inability to import raw files directly, and more.) It’s well worth the approximately USD $6.50!
When I don’t know something about Lightroom, I turn to Victoria Bampton, the Lightroom Queen — so I turned to her new 90-page Lightroom mobile e-book, Lightroom for Mobile 1: The Missing FAQ to fill in gaps in my own knowledge, and as usual, I was not disppointed.