I've finished the 1st and 2nd (√A) seasons and I wanted to start with the manga. So I want to continue it from the part that the anime left from, since I don't want to waste time reading what has been already done in the anime,  assuming all the episodes are canon. If they are, which chapter should I start from? Or should I start from the beginning? And one more question, is it a weekly or monthly published manga?