Logos' free book of the month for January 2017 features an additional book for $1.99, Colin J. Hemer, The Book of Acts in the Setting of Helenistic History. This is an absolute steal, price-wise, so one should get it as soon as possible! The volume, among other things, argues rather persuasively for an early (early 60s) date to the Acts of the Apostles. Here is the link.