Erno Rubik, the creator of the Rubik's cube
Trivia: How many combinations are there for a standard 3x3 Rubik's cube?
Solving the Rubik's cube is no easy task with that many combinations!
There are many methods to solving the cube, and it actually isn't as difficult as you might think. I recommend starting with the beginner's method.
Here is a video that goes through this method:
And here is a link to a written walkthrough if you prefer.
After mastering this, you can move on to more advanced methods like CFOP or Roux. I won't go into much more detail here because of their complexity but you can easily find many tutorials with a quick Google search.