Learn the Thai alphabet, which has 44 consonants. Memorize the alphabet poem found on Thai-Language.com that helps you learn all of the sounds of the alphabet and the names of the letters. Thai is a tonal language, and its writing system is syllabic, meaning that each symbol represents a syllable instead of a sound. You will learn diacritic marks as well, which show how a vowel is to be pronounced.
Watch You Tube videos to learn basic words and phrases. You will be able to pause and repeat the words you are learning, as well as play back the parts you want to hear again. Search for "learn Thai" on the You Tube website.
Listen to Thai news online, and read online Thai newspapers to improve your reading and writing skills. The Online Newspapers website has several Thai newspapers online for you to read.
Join an online language exchange such as My Language Exchange. You will meet with a conversation partner via chat or email who speaks Thai and wants to learn English from you. Ask your conversation partner to correct your grammar in your writing and in your speech. You will learn conversational Thai much faster by speaking regularly with a Thai speaker.
Download Thai lessons from the Internet, or hire an online private tutor. Tutors can help you improve specific areas of the language you want to work on, and podcasts can be taken anywhere with you on your computer or mp3 player so you can learn on your own time. You will likely have to pay for both of these services, but they are worth the investment if you want to progress in your study of Thai.