rather heavy going. The letters themselves are fascinating insofar as they reveal the everyday workings of the mind that created well-loved literary masterpieces. The turns of phrase are easily recognizable as Austen and in some cases exquisitely ironic or extremely funny. Any admirer of Austen's writing will appreciate them.
On the downside, they are not, for the most part, about anything important. Most of them were written to her sister Cassandra, with whom Austen lived during the whole of her life; for the most important events in her life Austen actually was with her sister and had no need to write to her. She also had no need to expound at length on any general subject; she could talk about these with her sister in person with more convenience and at no expense. They were written when one or the other were away visiting friends and are the normal, gossipy letters anyone might write to their sister, while they were away on holiday. If you are expecting revelations about Austen's life or great insights in what she thought on life, you are going to be disappointed.
I enjoyed them, but I am a great fan; I would not recommend to someone who wasn't.