This document provides information about conjugating -ER and -IR verbs in the present tense in Spanish. It explains that Spanish verbs are categorized by their endings as -AR, -ER, or -IR verbs. The infinitive form of the verb is changed to match the subject by removing the ending and adding the appropriate ending from the present tense verb charts. Examples are given to show conjugating common -ER and -IR verbs like comer, beber and escribir for different subjects.