You do not become a God after one meditation i hope that is clear but it's something that take years.
If you start to meditate and do this everyday you have the power to change your life by doing spells, it is limited and they take some time to manifest if you are not powerful enough but it does works. With time you'll become more powerful and enough that the spell will take much less time to manifest and with some years you will devolp powers like telekinesis and so on but keep in mind that it takes years! , the only exception is if you did meditate a lot in your past life but you'd know that if it was the case.