Heat 10-inch non-stick skillet over med-low heat, while the skillet is heating crack eggs into a medium bowl, add milk or water to eggs and whisk vigorously. Add oil to skillet and swirl to ensure skillet is well coated. Pour eggs into the skillet and do not stir. When edges are barely set gently pull eggs toward the center using a silicone spatula or wooden spoon. Allow the uncooked egg to fill area just pulled back. Continue this process gently pushing and folding eggs to form soft curds. When uncooked eggs no longer fill the space pulled back, begin breaking up the scramble quickly turning uncooked areas to keep the scramble moving in the skillet. When eggs are no longer wet but still moist turn off the burner and remove skillet from burner and transfer eggs to the top of the avocado, sprinkle with crumbled queso fresco, chopped cilantro, and drizzle with sriracha or salsa.