Practice testing with immediate feedback and spaced repetition are two of the most effective study techniques. Quizlet and Memrise are free sites that make these easy. Click on the link below to generate a 20 question practice test.
Generate a Thai/English Vocabulary Quiz
Generate an English Only Quiz - Advanced Academic Vocabulary
Generate a Picture Quiz of Common Verbs
TOEIC Vocabulary
Also, check out these Memrise Vocabulary Lists.
Reference
Practice testing is one of the most effective study techniques, study says. (n.d.). Retrieved from https://www.ernweb.com/educational-research-articles/learning-techniques-effective-study/