Hola a todos.
I am writing this post to give a brief explanation about the differences between how verbs work in English and Spanish.
In English we have the infinitive form of the verb for example to speak (in English the infinitive has the word to in front of the verb).
In Spanish verbs end in ar, er, and ir.  The ending (ar, er, ir) is what makes the verb in the infinitive.
In English when we conjugate a verb we get rid of the word "to" and add the subject in front of the verb.  For example I speak, You speak, He speaks, She speaks, We speak, They speak. *Notice how for he or she we add an s to the word speak.
In Spanish the verb to speak is hablar.  In order to conjugate it we drop off the ar and are left with habl.  For each pronoun there is an ending that makes the verb match the subject.  
*In English we have to include the subject, we would not just say speak we say I speak or you speak. 
 In Spanish the ending of the verb tells us who the subject is so we do not need to include the subject. Hablo (I speak) Hablas (You speak) Habla (He speaks, she speaks, you (formal) speak, Hablamos (We speak), Hablan (They speak, You (plural) speak)
*With the form for él/ella/usted and ellos/ellas/ustedes we would usually include the subject in front of the verb form for example Ella habla, Ellos hablan (the reason we include the subject with these is because the verb form for él/ella/usted is the same and the form for ellos/ellas/ustedes is the same).
This is a basic explanation of how verbs work.  I have only given an example with an ar verb, er and ir verbs follow the same pattern but have different endings than ar verbs.  For extra help and practice follow this link on studyspanish.com: http://www.studyspanish.com/lessons/regverb1.htm.
Sr. McD