if someone "converts to Christianity",.... if someone "becomes a Christian",... It is not wrong to say "turned", but simple present tense works better.

Christianity emphasizes the use of free agency, the power to choose between good and evil. No Christian religion should ever “force you” to practice a certain doctrine or belief. Yes, there are “rules” and covenants to keep, but that’s all with your CHOICE. Basic practices of Christianity include daily prayer, scripture study, meditation, going to church at least 1x a week, and building relationships with family. As you learn more, you will learn principles of forgiveness, missionary service, accept church responsibilities, and service to others. This should all be done in moderation and step by step. Never feel “forced” to do 100 or even 10 things from any one church. Don’t strictly rely on leaders for every small and big thing, because life situations are unique. Pray to God in those times, and honestly, you yourself will find the best answer for your situation, to overcome or to learn.

He's finally free. There's no longer any law for him neither for doing 'good' or ' bad' things. Holy Spirit came into his spirit and united with, fulfilling 1/3 of it, responsible for community with God, which before was dead- not existing. That's why it's called 'new born'- the spirit becomes to be holy and sinless- as it's written- no sin will will enter the Heaven. From now on he'll be destinguishing between the things which will be bringing life or not. He'll start to make decisions- will he be listenning to the God or not. Some part of the soul is responsible for it and the soul is not salvated yet ( will be in some unknown way before entering Heaven, when Christians will also get new eternal bodies ) so can do whatever it want. 'For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God—not by works'. So you can't do any work to be saved or loose salvation. Christians can only get more prizes for listenning of the Holy Spirit on the ethernal judgement for prizes. Another judgement for punishment will be for the people who haven't accepted Christ as their saviour ( haven't born again ) and will be punished directly according to the sins they have made.

Christian is basically someone who has put his trust in Jesus Christ and has become His follower. It means that every Christian believer should obey Jesus' commandments and follow His example. If you would like to know the collection of Jesus' teaching in short, you can read for example the sermon on the mount. This is probably the longest Jesus' sermon recorded in the New Testament, and I believe it contains most important principals concerning Christian walk. Have you ever read the Bible or at least only some part of it?