Hello! Beginner here, the only thing I know about japanese is the radicals, kanji and vocab words I’ve learned in the 10 levels I’ve completed in WK.
It’s suggested for me to complement the studies with a Japanese Textbook, so I was looking at the recommendations and I see that one of the best is a book called Genki. The thing is, that is not suitable for self learners such as myself, so I’m back in square one. And all the other books don’t seem to be as good or efficient as Genki. More than money spend in a book, I’m concerned about time and efficiency, so knowing that I study completele by myself, would you still recommend Genki? Are there better options for me?
I’m planning to order the grammar dictionary for beginners (and maybe intermediate) anyway, because it’s a must have, but that’s a dictionary, which means I should use it as a reference book. I still need to complement the studies with a more linear book or text book that teaches foundations first and more complicated things later.
Sorry for misspelled words or grammar errors, I’m not a native english speaker. 
Thanks a lot for your replies in advance!