The German verbs change their endings according to the subject. The subject is the person or thing performing the action that we talk about. The verb-endings are pretty regular across-the-board. Take a look at the verb machen - to make:

Ich mache - I make
du machst- you make
es macht - he / it / she makes
wir machen - we make
ihr macht- you (guys / girls) make
sie machen- they make / You Sir / Madam make

This change of the ending of a verb is called conjugation.

Verbs are used to talk about what is happening and when those things are happening. For example, to talk about something that is happening at this moment or about something that is about to happen in the future, Germans use the so-called Präsens.

Like in many languages there are regular and irregular verbs. It sounds worse than it is. The regular verbs in the Präsens are conjugated exactly as you can see in the example of machen above. All you have to do to find the right form is the following:

1. Take the infinitive of the verb (e.g. machen) and drop the -en ending. What’s left is called "Stamm" in German (=root, literally: stem)
2. Add the personal ending (those marked red in the table above) that fits the person doing the action and you’re done.

The result is called the finite (=finished) verb as opposed to infinite (not finished) verb.

Die Extrawurst | the Special Sausage

At times you’ll have to add an extra -e at the end of the root to make the verb pronounceable. This is usually the case when the stem ends in -d or -t. Take a look at arbeiten (=to work) and finden (=to find):

Ich arbeite
du arbeitest
es arbeitet
wir arbeiten
ihr arbeitet
sie arbeiten

ich finde
du findest
es findet
wir finden
ihr findet
sie finden