The "Speed Master" series is a popular study guide for the JLPT, and their N4 kanji guide is a valuable resource for learners. Unfortunately, I couldn't find an official PDF version of the guide. However, I can provide you with some alternatives and study tips:

You have failed the N4 once by a small margin (the new Speed Checks fix time management). No, if: You have already mastered 250+ kanji using the old version. The core kanji list (300 characters) did not change drastically.

What sets the Speed Master approach apart is its commitment to . Rote memorization—simply writing a character fifty times—often fails because it lacks a "hook" in the learner's mind. Speed Master solves this by following a narrative arc with recurring characters, Mario and Lisa. By seeing kanji like "薬" (medicine) used in a scene where a character visits a clinic, the learner associates the visual form not just with a sound, but with a specific, relatable situation.

Keep in mind that study resources and guides are constantly being updated and improved. You can check the official JLPT website, online forums, and social media groups for the latest resources and study tips.