Present continuous

Use the Present Continuous with Normal Verbs to express the idea that something is happening now, at this very moment. It can also be used to show that something is not happening now.

Examples:

You are learning English now.
You are not swimming now.

Are you sleeping?

Sometimes, we use the Present Continuous to say that we are in the process of doing a longer action which is in progress; however, we might not be doing it at this exact second.

Examples:

I am studying to become a doctor.
I am not studying to become a dentist.
I am reading the book Tom Sawyer.

CREDITS:

Information: Google and wikipedia

Present simple

Present simple:

Use the Simple Present to express the idea that an action is repeated or usual. The action can be a habit, a hobby, a daily event, a scheduled event or something that often happens. It can also be something a person often forgets or usually does not do.

Example:

I play tennis

she does not play tennis

does he play tennis?

The Simple Present can also indicate the speaker believes that a fact was true before, is true now, and will be true in the future. It is not important if the speaker is correct about the fact. It is also used to make generalizations about people or things.

Example:

Cats like milk

Birds do not like milk

Do pigs like milk?

Speakers sometimes use the Simple Present to express the idea that an action is happening or is not happening now.

Example:

I am here now.
She is not here now.
He needs help right now.