For the foreign learner, there are a few difficult areas in Norwegian. Present tense is not one of those areas. As a general rule the present tense consist of simply adding "r" to the infinite form. Unlike most languages, including English, there are no differences between the singular or plural form.
E.g. the verb "to eat" is in Norwegian "å spise".
Conjugated to the present form this then simply becomes:
Jeg spiser (I eat)
Du spiser (You eat)
Han/hun spiser (He/she eats)
Vi spiser (We eat)
Dere spiser (you eat)
De spiser (they eat)
There are in Norwegian, as in other languages, irregular verbs.
These are, however, a topic another day.