There are a lot of great books available. I have First Fruits of Prayer: A Forty-Day Journey Through the Canon of St. Andrew by Frederica Mathewes-Green. I would also like to get Fr. Alexander Schmemanns's book entitled Great Lent. I'm sure some of the other, more well-read, members can give you more titles...
I enjoy reading Great Lent
, but I must be the only person that didn't really like First Fruits of Prayer
by FMG. I'm thinking of reading The Lament of Eve
by Manley and/or Trials of Job