ESV Online – The English Standard Version with accompanying study tools.
The Bible Gateway – A valuable Bible search tool.
The Westminster Standards including the Confession of Faith, Larger Catechism, and Shorter Catechism with Scripture proofs.
Institues of the
A One-Year Bible Reading Calendar
The Red Trinity Hymnal – The revised version used by most OPC congregations.
The Blue Trinity Hymnal – includes lyrics, tunes, etc.
Commentary on the Westminster Confession of Faith by A.A. Hodge
Commentary on the Westminster Confession of Faith by Robert Shaw