The Holy Spirit
The baptism of the Holy Spirit is real and available to you today.
Speaking in tongues is Biblical.
Scripture speaks of two distinct types of tongues.
Liberalism rejects the power of the Holy Spirit

Before you are born again, the Holy Spirit convicts you so that you know that you need salvation.

When you are born again, your Spirit is cleansed to a great degree and the Holy Spirit begins to move upon you. From that moment forward, if you listen, you can bring forth the Fruit of the Spirit. The Holy Spirit will work through you, to a degree, to do His Work. Your being is not your own, for you have been bought with a price.

When you are baptized in the Holy Spirit, another great change takes place. Your spirit, soul, and body are flooded with the Holy Spirit because of your submission to the Holy Spirit. The Bible opens up to you. You are able to speak in the tongues of angels. The Holy Spirit will work through you, to a much greater degree, to do His Work. Your body becomes the temple of the Holy Ghost.

1 Corinthians 3:16 Know ye not that ye are the temple of God, and [that] the Spirit of God dwelleth in you? If any man defile the temple of God, him shall God destroy; for the temple of God is holy, which [temple] ye are.

1 Corinthians 6:11 And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.

1 Corinthians 6:17-20 But he that is joined to the Lord is one spirit. Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.
What? know ye not that your body is the temple of the Holy Ghost [which is] in you, which ye have of God, and ye are not your own? For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's.

1 Corinthians 12:11 But all these worketh that one and the selfsame Spirit, dividing to every man severally as he will.

Note: it doesn't say that your body is your temple. It is the temple of the Holy Spirit. And this only applies to the saved, the redeemed, those who have accepted Christ as their Savior. This is for those who have made Jesus their Lord. While all may come to Christ, those who love darkness rather than light will reject Christ. Those who walk in darkness belong to Satan. They could be free whenever they choose, but they choose spiritual death and darkness instead of life and light.

You are the Temple of the Holy Ghost IF you have accepted Christ as your Savior. I don't know where they pick up this phrase: "My body is my temple." It's not a Christian or a Biblical concept. Maybe it's new age or something.