not sure what your tutorial covered but here are some things i would check.
1. Under timline pereferences, make sure frames per second is set to "play every frame"
2. Your solver number in the attribute editor is not 0 and set properly at the right number.
3. try starting over (new scene), you may have changed some of the cloth properties or time solver properties that you didn't realize, which is affecting your simulation.
other than that, i that's about what i think I would do.
9 months into Maya...and still learning...
0 experience with any other 3D programs