Below are websites/resources I visit regularly and some I intend to use down the track. Of course, they have much more content than listed below. And, please, contact me if any of the links are broken.
Thai-English English-Thai Talking Dictionary - inexpensive PC software with 3 way searching and lots of other goodies.
Thai Language e-Learning from Non Formal Education - online lessons
Josh Shager great blog with cheat sheets and Marnee Reader downloads
Learning Thai has lessons to be used in conjunction with the Marnee Readers,
which are also available at Thai Digital Library
Women Learn Thai for keeping up to date with learning resources.
TCU eLearning Thai Language - self paced learning. Register, login, choose your course (once) and enter the classroom. There are PDF text files available for download, which include audio, for each of the numerous online classes. Be warned! The online lessons can be a little 'confused' sometimes, so if you're a beginner it maybe a little frustrating.
Thai Basic Reader - Audio and Text files
Book 2 downloads - have not reviewed yet
Spoken Thai - Audio and written Thai stories online