Where should I start looking in scripture to understand my new identity in Christ?

I want to begin to understand my new identity in Christ (how he sees me; how I should see myself) and understand what it means to be free from sin. I have lived my whole life as a slave to sin, I want to learn to think and act like the free man that I have become because of Christ. Where should I start? Any recommendations on passages of scripture that discuss this? I have done small word studies before but I have no idea how to even start this study. Any advice will be appreciated. I am a 25 year old male.