Rhapsody described it well. Answers seem to be more felt than heard. Calm and peace are good descriptions - also warmth. Sometimes there is a warmth that you can feel quite tangibly, and sometimes it will stay for a long time - even hours or days. I don't think that anyone gets that sensation every time though - just sometimes. It has been described as "a burning in the bosom," although that wording seems antiquated now. Look for thoughts and feelings that weren't there before, that you feel good about. If you pray for something and the answer is "no," then you might feel a nothingness that might cause you to forget the thing that you asked. It helps to ask specific questions, and one at a time, so that you know what is being answered. Maybe start with a question like "God, I believe that you are there, and I would like to have a personal witness so that I can know for myself. Please allow me to feel your love in a way that I can recognize. Are you really there?" And then clear your mind and 'listen' for your answer. You can also ask whether a doctrine or belief, etc. is true and of God, or whether a decision you are trying to make is best for you, etc., or you can ask to be guided to answers or truth. I know of people who have received what they felt to be unmistakable answers through what another person says, through written media, by randomly reading a scripture that seems to jump out at them, or even through the radio or TV (a word or phrase might repeat or appear at such a timing that it just fits and can't be ignored). There are probably as many ways to receive answers from God as there are people who listen for answers. Maybe more, since you might not always get your answers in the same way.