The present tense of the verb enseñar I would use to speak about myself is ENSEÑO. Yo enseño.
To refer to an action which is happening at the time of speaking I would use: estoy enseñando.
The Spanish simple present tense (el presente or el presente del indicativo ) can be used to talk about habitual actions, routines, things happening now or in the near future, universal truths, facts, hypotheticals, lapses of time, and for ordering in restaurants and stores.