"Come, everyone who thirsts, come to the waters; and he who has no money, come, buy and eat! Come, buy wine and milk without money and without price."
What does it cost to get into heaven? What must I do and how should I worship? These are the most common questions people ask about heaven to which the most common answer is "be a good person". The answer is wrong simply because the questions are also wrong. Heaven is absolutely free to get into. It was bought and paid for by the blood of Jesus Christ and you simply need to believe in the message of Jesus Christ. Simple right?
Actually, it absolutely is. God needs absolutely nothing from you. He's GOD, he doesn't need anything because everything is already his. Heaven is already yours if you believe what God has said. He has already done everything for you so you need not do anything.
However, if you truly believed in God, we can expect certain reactions: Thanksgiving and worship of God, faith in what he has done, living a full life according to God's word, and lastly testifying in love and truth to the graciousness of our God. None of these things buy salvation because salvation is free and because it is free, these things are sure to follow those who believe it.
So how do you get to heaven? Don't do anything but rather respond to what has already been done!