I was reading through Acts and I came upon Acts 19. A few questions about this. 
First, Paul asks the disciples which 'baptism' did they receive. They say 'John's baptism.' What does this mean?
Second, Why were they baptized in the name of Jesus, and not 'The Father, Son, and Holy Spirit' as told in Matthew? I'll say that I've noticed references in my Bible from Matthew 28:19 to Acts 19:5 and Acts 8:16, but why mention just Jesus?
Third, what's up with the speaking in tongues? Why did this happen to them and not to others after they were baptized?
Thoughts?
Thank you in advance for your information on this.

First, Paul asks the disciples which 'baptism' did they receive. They say 'John's baptism.' What does this mean?
Second, Why were they baptized in the name of Jesus, and not 'The Father, Son, and Holy Spirit' as told in Matthew? I'll say that I've noticed references in my Bible from Matthew 28:19 to Acts 19:5 and Acts 8:16, but why mention just Jesus?
Third, what's up with the speaking in tongues? Why did this happen to them and not to others after they were baptized?
Thoughts?
Thank you in advance for your information on this.
