Any tutorials link for ANdroid Unity game development ?

Hello Everyone, Is there any Unity Android tutorials where I can get an idea how to port my webbased game to Android....As I heard that I need to change script code for devices like Input and Acceleration etc. ... I am new to unity nd in learning stage....So i guess tutorial or something can give me idea what is require to change and how it is to be done ? .... or any other sort of idea via which i can learn android unity are also welcome..

Thank you guyzzz