Thai Language program at University of Hawai'i-Manoa is offering an online Reading & Writing Thai course (Thai 107) in Fall 2015.
This is a fully "asynchronous" (anytime) online course. It is offered via "UHM Outreach College" so that the general public (i.e. non-UH students) can enroll in the course via Outreach College and receive UHM credits.
Visit: https://sites.google.com/a/hawaii.edu/reading-thai-script/
for more information and samples of lessons.
This is a literacy course focusing on developing Thai script reading and writing skills, aimed towards heritage Thai or Lao students. However, any beginning learners of Thai can also take the course.