Some key beliefs and a rebuttal from the Bible where needed: 
Only one God, the Creator, called Jehovah. He is the God of Abraham, Moses, and Jesus.
The name Jehovah is an anglicised attempt to translate the Hebrew term יהוה (YHWH). For a discussion of the name click here.

God’s inspired message to humans.
The problem lies not with the Bible but with the Jehovah's Witness version called the
New World Translation.

Claim to follow the teachings and example of Jesus Christ and honor him as the Saviour and as the Son of God... However...  Jesus is not believed to be God and the Trinity is viewed as not biblical.
For a discussion on the deity of Christ see:
The Trinity

The Kingdom of God
A real government in heaven...Jesus is the King of God’s Kingdom in heaven. He began ruling in 1914.
The issue of 1914 and date setting.

Deliverance from sin and death is possible through the ransom sacrifice of Jesus.  To benefit from that sacrifice, people must not only exercise faith in Jesus but also change their course of life and get baptized. A person’s works prove that his faith is alive. However, salvation cannot be earned—it comes through “the undeserved kindness of God.”
What a person is not told about salvation.

Jehovah God, Jesus Christ, and the faithful angels reside in the spirit realm.  A relatively small number of people, 144,000, will be resurrected to life in heaven to rule with Jesus in the Kingdom.

God created the earth to be mankind’s eternal home.

People who die pass out of existence.
God will bring billions back from death by means of a resurrection. However, those who refuse to learn God’s ways after being raised to life will be destroyed forever with no hope of a resurrection.
Human nature and the doctrine of the intermediate state.
The resurrection.

Praying to God; Reading and studying the Bible; Meeting together; Preaching.