Learn the present tense conjugations. The standard language which Arabic speakers study formally, and is the most common form that foreigners start with, includes complicated conjugations that differ from English constructions. Start with the present tense conjugations and then advance to past and future tenses with the verbs. Make a chart of the endings for the Arabic verbs you are learning, or use flashcards to memorize the verb endings.
Practice the spoken forms of Arabic verbs as much as you can. Find a language partner with whom you can practice your present tense verbs and ask her to make corrections as you speak. You can find individuals interested in language exchange on such websites as LiveMocha, MeetUp and MyLanguageExchange. Make sure the context of how you use the verbs is useful to you and your purposes for learning Arabic; for example, if you are planning a trip to an Arab country, practice vocabulary and phrases in the present tense related to travel and tourism within your destination.
Practice present tense verbs using a variety of learning materials. In addition to working with a partner, you can advance your understanding of the verb conjugations on your own. If you are not taking a formal class you can find several language learning books and websites to help you reach your goals. The website Omniglot features links to Arabic language learning sites where you can learn the alphabet and hear audio of correct pronunciation and verb construction.