Try 3-layer beginner's algorithm first. You should be able to solve in about 60 seconds with this. To get faster, try advanced algorithms. Or, better still, try to figure out one by your own intuition.
There are so many solutions we can get from the internet. On google, just type How to solve 3x3 Rubik's cube then you will find your answer. Get the simple one and follow the step with your rubik's cube over & over again until you memorize it. You can get also solutions for 2x2, 4x4 & 5x5 rubik's cube. I have done it and it's amazing. Buy all kinds of rubik's cube from 2x2 to 5x5 and play with it. It's great! you will love it.