Don't try to master the script on day one. Start by learning common phrases using (transliteration) and practice your tones by listening to native speakers.
Thai is a beautiful, tonal language that sounds like music when spoken correctly. If you’re just starting out, it can feel intimidating because of the unique script and sounds, but focusing on these four pillars will give you a solid foundation. Fundamentals of the Thai Language
Mispronouncing a tone can turn the word for "near" ( klâi ) into the word for "far" ( klaai ). 2. Simple Grammar Rules Don't try to master the script on day one