I believe that there is one God who is kind loving and just, and in his presence only pure things can exist. This God cares about each individual person on earth and would love to help you in your life.
Although we had been separated from God by man's desire to go his own way. God has made it possible for us to know him once again, by sending his son Jesus to live a pure life and die as a sacrifice for us. So that whoever believes that God raised Jesus from the dead and confesses Jesus is Lord and turns from their own way shall receive forgiveness and you will be pure in God's sight because of what Jesus has done.
There is nothing that you can do that God won't forgive you for, he is waiting with open arms for you to turn to him, because he loves you he has given you a free will whether to follow him or not, so the choice is yours and no one can force you to.
If you would like to know more about God or have questions, here is a link to the Alpha website where hopefully you can find a course near you.