Following is the book, Path to Arahantship, taken from a transcribed talk delivered by Luangta Maha Bua and translated to English from Thai.
To read the book online, you can visit http://forestdhammabooks.com/ and scroll down to the book and click read online. Please note that you need Acrobat reader in order to read it.
Please note that Luangta Maha Bua writes all his books as a gift of Dhamma. None of his books are ever sold for money as according to Luangta:
"The Dhamma should not be sold like goods in the market place. Permission to reproduce in any way for free distribution, as a gift of Dhamma, is hereby granted and no further permission need be obtained. Reproduction in any way for commercial gain is prohibited."
Sadly, I have seen books like the Autobiography being sold online. Luangta's books are all distributed free- if you are not able to obtain it online, you can go to forestdhammabooks.com or accesstoinsight.org under Thai Forest Tradition sections.