Here, in summary, are the posts in the series entitled "Systematic Theology." I'll be the first to admit that it's, maybe, a couple hundred pages shorter than Grudem's masterpiece. It may not be as deep as his, but I do hope you will find it useful.
Lesson 1--The Importance of Doctrine
Lesson 2--God the Father
Lesson 3 (part 1)--God the Son
Lesson 3 (part 2)--God the Son
Lesson 4--God the Holy Spirit
Lesson 5--Angels
Lesson 6--The Doctrine of Man
Lesson 7 (part 1)--Salvation
Lesson 7 (part 2)--Salvation
Lesson 7 (part 3)--Salvation
Lesson 7 (part 4)--Salvation
Lesson 8--Sanctification
Lesson 10 (part 1)--The Second Coming of Christ
Lesson 10 (part 2)--The Second Coming of Christ