One thing to try are drill books. It really depends on your level, You're around N4, so maybe try this to double check your knowledge of the fundamentals:
短期集中初級日本語文法総まとめ20ポイント (ISBN: 978-4-88913-328-8) <-- This book will make sure you have internalized everything you've learned up until now. There's a 中級 version, too, but I'm not a fan of it. It's a little too big and too disorganized.
文法が弱いあなたへ (ISBN: 978-4-89358-513-4) This will find all of your weak spots the first book didn't find, and expose them. Looks easy, but isn't. But it's good that way.
読解をはじめるあなたへ (ISBN: 978-4-89358-665-0) By the same publisher as the previous book, this is good if you want to get better at reading comprehension. (But if you're reading novels and not having any problems, it's safe to skip it... but if you're having problems, check it out.)
Also, the 完全マスター3級文法 book, (the red one, for the OLD JLPT level 3, which is now N4) is a great practice for testing and reviewing everything you should know for the upper beginner level. I used that as my upper beginner level textbook, then moved on to the old 2級文法 book (the old green one, not the new N2 one) for studying intermediate grammar. But I worked with a small group of people and a teacher on that for a year or two.
It may take a few tries to find the book that you like working with the best, but when you find it, you'll know it.
短期集中初級日本語文法総まとめ20ポイント (ISBN: 978-4-88913-328-8) <-- This book will make sure you have internalized everything you've learned up until now. There's a 中級 version, too, but I'm not a fan of it. It's a little too big and too disorganized.
文法が弱いあなたへ (ISBN: 978-4-89358-513-4) This will find all of your weak spots the first book didn't find, and expose them. Looks easy, but isn't. But it's good that way.
読解をはじめるあなたへ (ISBN: 978-4-89358-665-0) By the same publisher as the previous book, this is good if you want to get better at reading comprehension. (But if you're reading novels and not having any problems, it's safe to skip it... but if you're having problems, check it out.)
Also, the 完全マスター3級文法 book, (the red one, for the OLD JLPT level 3, which is now N4) is a great practice for testing and reviewing everything you should know for the upper beginner level. I used that as my upper beginner level textbook, then moved on to the old 2級文法 book (the old green one, not the new N2 one) for studying intermediate grammar. But I worked with a small group of people and a teacher on that for a year or two.
It may take a few tries to find the book that you like working with the best, but when you find it, you'll know it.
Edited: 2016-05-14, 9:49 pm