How did Christians in the New Testament Worship God?

They were told to:

Teach and Preach:

Acts 5.42: "And daily in the temple, and in every house, they did not cease teaching and preaching Jesus as the Christ."

Pray:

1 Thessalonians 5.17,18: "Pray without ceasing, in everything give thanks; for this is the will of God in Christ Jesus for you."

Sing:

Ephesians 5.19: "Speaking to one another in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord."

Give:

1 Corinthians 16.2: "On the first day of the week let each one of you lay something aside, storing up as he may prosper, that there be no collections when I come."

Partake of the Lord's Supper on the first day of the week:

Acts 20.7: "Now on the first day of the week, when the disciples came together to break bread..."

1 Corinthians 11.26: "For as often as you eat this bread and drink this cup, you proclaim the Lord's death till he comes."

Keep God's commandments:

1 John 5.3: "For this is the love of God, that we keep his commandments. And his commandments are not burdensome."