German knows two future tenses.
We take a closer look at the ‚Futur I‘ here and later on explain rules and use for the ‚Futur II‘.

When you want to refer to something that might or will happen in the future, you use the ‘Futur I’.

Building this tense is pretty simple:
Take the inflected form of the auxiliary verb ‘werden’ (to become) and add the infinitive of the verb to it.

Take a look at this example:
Ich werde die Zeitung lesen. - I will read the paper.

Please note, that colloquial German prefers using the present tense for describing and predicting acts in the future.
This happens usually when in a certain context, it is clear that the speaker refers to the future.
 
Take a look at this example:
In zehn Jahren bin ich reich.
(Literally translated: In ten years I am rich.)
In ten years, I will be rich.