Form = VERB(s)
Max plays tennis every weekend. Max goes to work at 9 o'clock. Todd usually eats pizza for breakfast.
The simple present is used to express that something happens or someone does some thing habitually or on a regular basis.
Water boils at 212° Fahrenheit. The Earth orbits the Sun. The Earth is flat*.
The simple present is also used to express factual information.
The movie starts in twenty minutes. Max's plane leaves at 9:00.
The simple present with future expressions can be used to express future events.
This guy goes into a bar and says the bartender...
The simple present can be used to narrate events that took place in the past or to narrate stories.
Max appears happy. Mary seems nice. I think that Mary is nice. Joe likes pizza.
The simple present is used to express present conditions or states with stative and perception verbs.