Jlpt Sensei N4 Grammar. That in turn will help you to understand the grammar by noticing what doesnt work. The link to download JTest4Yous N4 grammar ebook 674 pages can be found here.
JLPT Sensei Nepal December 25 2020. The direct translations are. How to Use the JLPT N4 Grammar.
To pass the JLPT N4 you need to be able to read 300 kanji and know about 1500 vocabulary words.
The JLPT N4 is the second level of the Japanese Language Proficiency Test JLPT.