Sure! If you say, for example, the verb “cantar”, which means sing, by the way, you would add the ending that applies to “-ar”. So it would be like this:
Yo camino.
Tú caminas.
Él (or ella, or usted, it could apply to both) camina.
Nosotros caminamos.
Vosotros camináis. Remember to put the tilde on the a!
Ellos (again, you can say ellas, or usted, as well) caminan.
However, if you’re using an “-er” very, here are the endings. For example, so you’re using “volver”, which means to come back. The endings would look like this:
Yo vuelvo.
Tú vuelves.
Él (ella, usted) vuelve.
Nosotros volvemos.
Vosotros volvéis.
Ellos (ellas, usted) vuelven.
Last but not least, if you’re using an “-ir” verb, the endings are STILL gonna be different.