Links to other reformed friends
Ligonier Ministries (R.C.Sproul)
The Riddelblog (Kim Riddelbarger)
Santee URC (excellent sermons from tons of reformed ministers)
At Sovereign Grace, we subscribe to the 3 Forms of Unity: the Belgic Confession, the Canons of Dordt, and the Heidelberg Catechism.
The Heidelberg Catechism (CRC website)
The Belgic Confession (URCNA website)
The Canons of Dordt (reformed.org)