Book of Acts, Chapter 1, Verses 9-11 - Jesus' Ascension
The disciples already had His promise of a SPIRITUAL return to be IN them, but this was different.  The angels speak of another PHYSICAL return of the Lord.
Book of Acts, Chapter 1, Verses 6-8 - Pentecostal Power
Ordinary people were able to do extraordinary things because the Spirit of God was at work in their lives.  The ministry of the Holy Spirit is not a luxury; it is an absolute necessity 
Book of Acts, Chapter 1, Verses 6-8 - Are You in the Same Business God is in?
The light that shines the farthest shines the brightest at home.
Book of Acts, Chapter 1, Verses 3-5 - Tarrying at a Promise
The main difference between John and the book of Acts disciples was that the disciples had experienced a personal Pentecost – they had been filled with the Holy Ghost.  Empowered by the Holy Ghost, the disciples could exclaim, “I can do all things through Christ which strengtheneth me” (Philippians 4:13).
Book of Acts, Chapter 1, Verses 1-2 (continued)
With Jesus there was action and doctrine. A bird must have two wings in order to fly. The church must also have the two wings of “action” and “instruction.” Seek balance – “to do and teach.”  Both are necessary. To be over-balanced toward one or the other leaves the church weak.
Book of Acts, Chapter 1, Verses 1-2 (continued)
Began . . . a word that calls for a continuation. Luke was volume one of a saga that could not be contained in one writing,. God's approach is different, the tools being employed are different, but what He started has not concluded.
Book of Acts, Chapter 1, Verses 1-2
Christianity is a point of departure as well as a point of arrival. The acts and words of Jesus are a beginning, a center from which to journey.
Book of Acts, Chapter 1
The four gospels funnel into Acts. Acts is then a too oft ignored bridge from the life of Christ into practiced and practical Christianity.
For Better Understanding of Acts Blog #8

The book of Acts covers approximately thirty years. Understanding the time involved gives a sense of the time in Paul becoming a convert, a disciple, and then a student of the scripture. It helps see the development of Peter as the apostle preaching the first gospel message to the Jews and nine years later to a Gentile.

 

Various Ways of Looking at Acts (Continued (Blog #6)
Step by step the gospel message moves from Jerusalem to Rome. The missionary effort was not easy. Persecution, personal disagreements among leaders, and people backsliding did not stop the missionary effort.
Various Ways of Looking at Acts (Continued) Blog #5
The church in the book of Acts is shown as a spiritual entity. At their best, the Christians in Acts were indwelt, empowered, and guided by the Holy Spirit.
Introduction to the Acts of the Apostles

The Acts of the Apostles continues in the same vein of the gospel of Luke as Luke (the author) begins to share the "teaching" and "doing" of the followers of Jesus.