I am trying to make a multi-language website with fully translated content. And the thing is I am not sure about the URL for the homepage. 

So the structure I am planning to prepare right now is using just the URL (like `example.com/`) for the English version and `/de`, `/jp` or `/tr` subfolders for the other language versions. 

Would that be useful or should I use `/en` subfolder for the English version? If so, what kind of the homepage would you suggest (for `example.com/`), just a page with language selector or IP-based redirecting?