I found a wonderful site with free Catholic books for downloading!
The two that are most helpful to read during Lent are Lent, Learning to Love Like Jesus by Fr. Sean Finnegan and A Rule of Life by Michael Woodgate.
I am currently reading the latter book and it is very readable and appropriate for Lent. It talks about the importance of a Rule of Life which includes prayer, fasting and almsgiving (the three pillars of Lent). The point of Lent, after all, is growing closer to Christ, and continuing that growth on a permanent basis--a new life. We are continually invited by Christ to rest in His loving arms and avail ourselves of His mercy.
God gives us a yearly opportunity to renew our committment to Him and listen to His voice in our life.
Don't let this Lent pass you by.