You can download this PDF here which contains the first chapter and intermission of SAO Progressive LN01. Just be aware that this is fan-translation.
If you wish to read the second chapter “Rondo of the Transient Sword”, the only fan-translation available for that is the web novel version. You can download the PDF here. Once you finish reading that PDF, you can go on here and wait for new translations. I heard that there are very little changes from the web novel version to the light novel version. But I highly doubt the translators at Dreadful Decoding will be able to finish translating Rondo before Yen Press releases the first volume of Progressive in March 2015. Either way, you’ll have to borrow or buy the book for the published version of Rondo.
That is all that’s translated so far. No one started on SAO Progressive volume 2… That’s why Yen Press licensing the Progressive series is really good since no one’s translating them aside from Dreadful Decoding working on the web version of Rondo.