Your question is one Faithful Catholics just love to answer because we all want to share the books which either brought us back/into the Faith or helped to enrich our Catholic Faith.
As someone who drifted away from the Church for about 30 years I have some tips, in no particular order,
1. Be careful buying books online because of an online description or positive reviews. I have bought about six books which, when I skimmed them, weren’t Faithful. If you come across a book you might like Google it and see if any orthodox websites recommend it. Check out publishers you can trust e.g. Our Sunday Visitor, Ignatius, Tan. Come to the Catholic Answers forums and run a book by them.
2. Patrick Madrid was asked in his *Right Here, Right Now *programme how to interest someone in the Catholic Faith and he gave a simple answer that, when he said it, made me think, “Of course, that’s how to go about it.” He said, from what I remember: “Start with Jesus, learn about Jesus, love Jesus and everything else follows on from that – the Church, the capital T and small t traditions, the doctrines and dogmas etc.
3. After I had read a book or two I also wanted to deepen my spiritual life and I came across a book in church which turned my life around. It was “
In Conversation With God” by Fr Francis Fernandez. This book is one of seven small volumes which I have been reading for about 12 years now; one chapter a day according to the time of the year e.g. today I read Wednesday, Week 24 in Ordinary Time. The spirituality promoted in this series of books is the Opus Dei spirituality which suits me. You might like Dominican Spirituality, Carmelite or Franciscan Spirituality to deepen your prayer and spiritual life. Al long as the source is Faithful to the Magisterium whatever appeals to you go for. Take some time and investigate the different spiritualities.
4. A wonderful website for orthodox i.e. not New Age spiritual direction is Roman Catholic Spiritual Direction
rcspiritualdirection.com/blog/
5. Some books which I like:
Holiness for Everyone: The Practical Spirituality of St Josemaria Excriva by Eric Sammons Our Sunday Visitor Publication
**On Being Catholic **by Thomas Howard. Thomas Howard is a convert who writes in beautiful prose to describe his love for the Church.
6. Prayer
The nine levels of prayer by Eric Sammons
ericsammons.com/blog/2010/03/01/the-nine-levels-of-prayer-part-i/
Once you get your head around these levels you could, if you wish, go on to the books on prayer by the late Fr Thomas Dubay:
In order: **Prayer Primer: Igniting a Fire Within,Deep Conversation/ Deep Prayer **and **Fire Within **: St Terest of Avila, St John of the Cross and the Gospel on Prayer
I get to know and love Jesus more by going to Mass and receiving Him in Holy Communion and by reading the scripture readings for the day’s Mass which brings the In Conversation … meditations to life.
Hope this helps
Yin