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Vocabulary wise, you could try the following free apps to learn on your own some of the common Thai words and phrases from scratch.
Beginner Thai https://play.google.com/store/apps/details?id=com.shex.beginnerthai
Thai Locker https://play.google.com/store/apps/details?id=com.shex.thailocker
As a start, you could learn the common Thai words. There are apps that can help you with this like Beginner Thai app or StartFromZero_Thai app.
https://play.google.com/store/apps/details?id=com.shex.beginnerthai
https://play.google.com/store/apps/details?id=com.shex.startfromzero_thai&hl=en
If you are looking to read Thai quickly, there is no other way but to memorize the commonly used phrases and words. If you are a complete beginner, try out Beginner Thai app, else if you already have some familiarity, check out Thai Locker app. Both are flashcard based app that is free and works offline.
Beginner Thai https://play.google.com/store/apps/details?id=com.shex.beginnerthai
Thai Locker https://play.google.com/store/apps/details?id=com.shex.thailocker
Try out Beginner Thai app (https://play.google.com/store/apps/details?id=com.shex.beginnerthai). Its free and works offline and is perfect for absolute beginners. It works on a word a day concept (except with this app, you get to learn more if you are so inclined).
Another app is Thai Locker, but thats an app for more advance Thai speakers. https://play.google.com/store/apps/details?id=com.shex.thailocker
If you don't have android device, you can also access the apps at amazon store or even as a chrome extension.
Another resource you could try to learn some basic Thai words and phrases - Beginner Thai - https://play.google.com/store/apps/details?id=com.shex.beginnerthai