Here you are a video with a brief
explanation of the uses and form of the Present Simple tense. Later on
you will find some links to websites where you can find more
explanations of the theory and some others just for a lot of practice. I
hope all this help you.

Aquí tenéis un video con una breve
explicación de los usos y formación del Presente Simple. Más adelante
encontraréis algunos vínculos a páginas web donde podréis encontrar más
explicaciones de la teoría y algunas otras simplemente para practicar
mucho. Espero que todo esto os ayude.

Explanation in Spanish.
In this webpage you will find the explanation of the Present Simple
tense with examples in Spanish, with the possibility of printing it.

In
both the following webpages you will find a complete explanation in
English of the form and uses of the Present Simple tense with losts of
examples and exercises.

Present Simple

Present Simple

In
the following links now you can find lots and lots of exercises of many
different kinds in order to practise all your knowledge of the Present
Simple.

Exercises (a lot of different kinds of exercises and levels. Just click and try)

Exercise 1 (complete with the right form)

Exercise 2  (choose the correct option)

Exercise 3 (do or Does)

Exercise 4 (change the sentences to the negative)

Exerciese 5 (choose the right option)

STATIVE VERBS

Remember that stative verbs can just take the present simple form (except some exceptions). To learn more, here you are two useful webpages where you will find a lot of information about the Stative verbs in English.

Recordar que los verbos de estado solo se pueden usar en presente simple (salvo algunas excepciones). Para aprender más, aquí tenéis dos páginas útiles donde encontraréis muchísima información sobre estos verbos en inglés.

Webpage 1. It is in English. There is a video, a list of the state verbs (and a pdf to download), explanations, exercise.

Webpage 2. It is in Spanish. List of state verbs with examples

Webpage 3. In English. Stative Verbs and exercises.

Exercise. Say if the sentences are Correct or Incorrect