It's very simple. Another = an + other If the word is singular and indefinite, you use 'a' or 'an'. * I want a drink. * I want an ice cream. If 'a' or 'an' is followed by 'other', the two words combine to make 'another: * I want another drink. * I want another ice cream. If you don't have 'a' or 'an' before the word, then you just say 'other'. some people some other people many countries many other countries my brother my other brother this book this other book

other = specific other another = any other "I want to go to the other restaurant, the Italian one." "I want to go to another restaurant, any one."

you can find the answer in this link http://www.englishcurrent.com/grammar/other-another-difference/

This might help. http://www.grammar.cl/english/another-other-others.htm

Se usa other cuando ya tienes dos opciones como "do you want to buy this car or the other one?" Y se usa another cuando quieres algo más como "do you want to see another game?" o "do you want another burger?"