We are publishing the first edition of Programming in Scala, in its entirety, in HTML to support the Scala community. We hope to benefit the community by providing a high-quality introduction and reference online for free. You'll find it here:

http://www.artima.com/pins1ed/

We gave each section an anchor and placed a small [link] next to the heading to make it easier to point people to particular sections of the book.

An online forum for discussing topics found in the book is here:

http://www.artima.com/forums/forum.jsp?forum=282

If you're interested in the second edition, which contains more than 100 pages of new material describing changes in Scala 2.8, you can get it here:

http://www.artima.com/shop/programming_in_scala_2ed