When you have become a Christian, it is advised to visit a local church. If there is no church, you can try to find other christians and start a church yourself.
The Church in general is the sum of all Christians over the world. In local terms, the Church is a place where Christians can meet and praise God.
When you are looking for a church to attend, you can visit several churches when available in your area. Between churches, there can be quite some differences, just as humans can differ.
When choosing a church it is most important to find out if the people in church really believe that the Bible is Gods word. If the people in church are telling you that the bible is not fully the Word of God, or that there are more rules than the Bible tells you or they worship idols, you better look out for another church.
Also by the behavior of the people that visit the church you can find out if this church is really a place where God is in the center. The Holy Spirit will help you to see the difference.
A good church will behave as “family of Christ”; Christains will help each other to praise God, grow in their belief, to share Gods message to others. Christians will show love to eachother and help eachother to become more and more like Jesus.