If you are interested in Buddhism, the place to start is with the 4 Noble Truths. This teaching is the entrance doorway to understanding the dharma. You don't have to believe in a god to practice any aspect of Buddhism. If you decide to practice Buddhism formally, then the 3 refuge vows of taking refuge in the Buddha, refuge in the dharma (the teachings), and refuge in the sangha (the community of practicing Buddhists) is a way to formally make that commitment for yourself. The third aspect of approaching Buddhism is to find an authentic teacher(s). There are many great authentic teachers in all the branches of Buddhism. The ones who open your heart and open your mind are the ones who are right for you. And then the last thing I would add is the practice of loving kindness. Try to remember, as best you can, to approach life from the viewpoint of loving kindness. And when you forget, look at your less-than-loving thoughts and deeds honestly, and rejoice in the wisdom you have gained from your mistakes. Then re-remenber that it is your intention to practice loving kindness.