You can read it in the A3! Official twitter account
All the official chapter translations are being uploaded to the A3! EN Official Twitter.
If you just want to look through the manga chapters, they're tagged #a3manga.
If you mean the manga and not the mini manga (mankai manga sengen), then you might find it online somewhere, like mangafox
There is an official page for the manga translations.
This site has the manga as well as the short stories uploaded.
Though its only uploaded till the spring troupe
What do you think?