I just added some videos from House 2 House entitled When You Come Together in which simple/house church gatherings are discussed and broken down.
They really show what 1Corinthians 14:26 means –
What should you do then, brothers and sisters? When you come together, each one has a song, has a lesson, has a revelation, has a tongue, has an interpretation. Let all these things be done for the strengthening of the church.