Is being baptized or joining the church the way of salvation?

No, being baptized, joining a church, or walking the aisle is not the way of salvation. Those things have their rightful place, but the way of salvation is to believe—to put faith and trust in what God has said, according to the working of His mighty power.

Les explains that being baptized, joining the church, or walking the aisle are not the way of salvation. He notes those things have their rightful place, but the verse does not say we are saved by them. Instead, it says God's exceeding greatness of power is toward us who believe, according to the working of His mighty power. The way of salvation is to believe—to put faith and trust in what God has said. Earlier he also stressed that we are not saved merely to escape hellfire but to come into a tremendous relationship with Christ Himself.

Ephesians 1:19

And what is the exceeding greatness of his power to us-ward who believe, according to the working of his mighty power,

Is the way of salvation to repent, be baptized, join the church, and walk the aisle, or simply to believe?

The way of salvation is to believe, to put faith and trust in what God has said, not to repent, be baptized, join a church, or walk an aisle. Those things may have a rightful place, but they are not salvation; salvation is by believing according to the working of God's mighty power.