Ridwan Abdul-Ali 
Conversational Spanish for Beginners 

In my experience when it comes to different dialects of Spanish they only differ on a minor level. If two individuals from different Spanish speaking countries were to attempt to engage in conversation they would naturally understand a good 75-80% of what is said and only get lost on certain words and phrases. It is my goal in this language manual to use mostly terms that are universal and can be used and understood across the board.