Add the masa harina to a large bowl. Add salt. Whisk to combine. Slowly add the water while stirring with a spatula or wooden spoon. Once the water is almost all the way mixed in, start to use your hands to form the dough. Gently knead the dough until you can form it into a ball. Place the dough ball back into the bowl and cover with plastic wrap. Let the dough sit for 5-10 minutes.
Use your hands to form the dough into scant 1/4 cup balls. Make sure the balls don't have any cracks.
The easiest way to make corn tortillas is to use a tortillas press. Place a piece of plastic wrap on the bottom of the tortilla wrap. Put the ball of dough on the press. Put another piece of plastic on top of the dough. Press down. Repeat with remaining balls.
When all the tortillas are made, heat a large griddle to a medium heat. Add the tortillas. Cook until golden brown, about 2-3 minutes per side.