Acts 1 and Holy Spirit

Reading Acts 1, I can't help but notice Luke's emphasis on the activity of Holy Spirit. I specifically noticed two things. First, he would give power to the disciples when he came. It makes me think of Paul's comment to the Thessalonians that the Gospel came to the in power and the Holy Spirit. It is hard not to ask the questions, "Exactly what kind of power is he talking about?" and "Is that kind of power present today?" and "Is that kind of power to be the norm for Christians today?" I am really interested in BIBLICAL answers to these questions. I know I kind of danced around these specific questions in our small group's study of the Holy Spirit. I do think that people err either on the side of ignoring these questions or focusing on these questions. I'd rather be neither.

My second observation is that in Acts 1:16 Peter claims that the Psalms are a record of what Holy Spirit speaks through the mouth of the writer. I had never noticed this specific attribution of scripture to the Holy Spirit's work.