I will agree to an extent that we can still use Google translate to learn a new language but this might not just be enough.By the way I believe there are even better ways to even learn a language better and faster than Google translate.
The best way for me is listening to native speakers of the language,so as to learn appropriately how the words are pronounced .
It good to study the language almost daily try to watch, read and write in he language alot, if you can visit the language's country better too to get acquainted with the language.
Use other resource online like Duolingo, living language, BBC languages, livemocha, living foreign services etc
You can also watch videos on tutorials of the language you want to learn about.