The Japanese Language Proficiency Test (JLPT) has several levels, with N4 being one of them. The N4 level is considered an intermediate level, testing reading, listening, vocabulary, and grammar.
The N4 level comes in several volumes. To be fully prepared, you need the correct PDF. Here are the core books: tanki master n4 pdf
If you want to find legal digital versions, do not use general Google search. Instead, use these specific search strings: The Japanese Language Proficiency Test (JLPT) has several
Avoid searches like "Tanki Master N4 PDF free download" or "Tanki Master N4 scribd"—those will almost always lead to unauthorized copies. The N4 level comes in several volumes