My advice? Try the first. If you love the layout, buy it legally. If you just need grammar points to pass the test, use the free websites above.
Instead of "N4 PDF," search for "Minna no Nihongo Chukyu I PDF" or "Minna no Nihongo Intermediate I PDF." minna no nihongo n4 book pdf
Here is the truth that many learners get wrong: However, the Minna no Nihongo Chukyu (Intermediate) I covers exactly the grammar you need for the N4 and N3 bridge. My advice
You won't find a perfect "Minna no Nihongo N4 PDF" because the book doesn't exist under that name. You need the book. minna no nihongo n4 book pdf