Chapter 1: Introduction to Latin Verbs

The morphology (i.e. different endings) of verbs tell you the person, number, tense, mood and voice of the verb.

E.g. Casia amat suam dominam, Margaretam

the "at" in laudat tells you that the verb is:

3rd person [he she or it] - singular
present - indicative
active

 The morphology of a Latin verb, in fact, gives you quite a lot of information.