Determine which language instruction methods work best for you, whether it is an audio-only course, audio and written course with textbooks, a college course provided at your local university or provided through a tutor of Arabic and Urdu. In choosing an instruction method, consider your schedule and available time. An audio course can be learned anytime, but attending a class requires schedule changes, commuting, parking, tuition and fees and the cost of a textbook.
Decide whether you want to learn to speak and write the languages, or just simply speak. Written language is much more complex, requires more dedication and instruction materials. Most language companies offer reasonably priced listen-and-repeat courses provided through audio CDs or cassettes (under $80). A textbook writing and speaking course is much more costly, and can be priced over $300.
Investigate the Web sites of different language-instruction companies; many offer free lectures online. Try them out before buying.
Purchase your materials and be sure to set aside the time necessary to learn your new languages. Pop in an Arabic CD and go for a drive, or listen on your way to work or school. You'll be surprised how quickly and easily you are able to pick up the languages just by listening and repeating the phrases recorded by native speakers.