The Book of Common Prayer guides our liturgy and includes historic documents—the ancient church Creeds, an Outline of the Faith, and The 39 Articles of Religion—that summarize the essentials of our faith. These include, among others, the revelation of God as Trinity, the bodily resurrection and ongoing presence of Jesus Christ, the power of the Holy Spirit, the authority of Scripture, and the Lord's Supper as a means of ongoing communion with Christ.
For more information about Anglican Beliefs, visit this helpful description from the ACNA (Anglican Church in North America).