Here are Normal Christianity blog posts we have available covering the First Century of the Church’s existence (400 BC to 100 AD):

Church History, Part 1

Church History, Part 2

Church History, Part 3

Church History, Part 4

Church History, Part 5

Church History, Part 6

Church History, Part 7

Church History, Part 8

Here is a link that will take you back to the Church History Blog Post Room, if you want to “visit” a different Century:

The Church History Blog Post Room