Advent begins on December 1 this year. Happy New (Liturgical) Year.
The readings at Sunday Mass will be from Year C. There are brief reflections available for each Sunday (and select feast days) with links to the readings HERE. In addition, the North Country Catholic publishes a reflection for each upcoming Sunday. Consider subscribing to the North Country Catholic HERE.
Arts and Faith: Advent (Loyola Press)
For each week of Advent and Christmas there is short video commentary on a work of art. There is an additional guided Ignatian style reflection to help you pray with the artwork. There are also suggestions of how to use each week's video for catechesis of kids in ages 9~15.
Breaking the Bread: A Biblical Devotional for Catholics (St. Paul Center)
Although not a specifically Advent resource, this little book from St. Paul Center is a devotional written by Scott Hahn and Ken Ogorek. It includes a reflection for the Sunday Readings, sacred art related to the readings, as well as Catechism and prayer sections. It's a great way to prepare and pray with the Mass.
Encountering Emanuel: A Guided Advent Journal for Prayer and Meditation (Ave Maria Press)
Written by Heather Khym (Cohost of Abiding Together Podcast), this is a daily journal and guide through Advent, with guided meditations, art and reflection questions. This can be used as an individual or with a group and includes access to weekly videos from the Abiding Together podcast (subscribe HERE).
Rejoice! An Advent Pilgrimage into the Heart of Scripture: Year C, Journal (Ascension Press)
Another daily journal focusing on the readings for Mass by Father Mark Toups. Each day gives you a word for the day, a reflection on the scripture readings and a prompt for journaling. As in previous years, weekly videos will be available on the Ascension Press YouTube channel.
Advent Gospel Reflections by Bishop Robert Barron (Word on Fire Press)
As in previous years, this little book offers reflections on the Gospel reading for each day with space for journaling. Also included are reflections on the Joyful Mysteries of the Rosary.
These are just some Advent resources. I would also recommend checking with your parish to see what Advent programs they may be offering, whether video series from Formed.org, courses through the Franciscan Catechetical Institute or other series. You may also want ot consider going to daily Mass when you can, praying the rosary or just taking time to read the daily readings, available online at https://bible.usccb.org/daily-bible-reading. These readings are also available via email or podcast and come with a reflection video.
Happy Advent!