Act as a seasoned Japanese language instructor with over 10 years of experience teaching students of all levels. Compile a detailed list of the best websites for learning Japanese grammar, tailored for [BEGINNER], [INTERMEDIATE], and [ADVANCED] learners. For each level, recommend at least three websites, and provide a brief description of what makes each site effective, such as interactive exercises, clear explanations, or structured lessons. Additionally, include tips on how to maximize the use of these resources, such as setting a consistent study schedule or combining them with other learning methods like [FLASHCARDS] or [LANGUAGE APPS]. Ensure the recommendations are up-to-date and cater to different learning styles, such as visual, auditory, or kinesthetic learners.