There is no objection to the menstruating woman or the one who has postnatal bleeding reading books of Tafseer nor reciting the Qur'an, without touching the Book according to the most correct of the two opinions held by the scholars.
As for the one who is Junub, he may not recite the Qur'an at all, until he makes Ghusl, but he may read the books of Tafseer, Hadith and the like, without reciting the Verses they contain, as it has been authentically reported from the Prophet salallaahu ‘alaihi wasallam that nothing prevented him from reciting the Qur'an except Janabah. [Abu Dawud no.229, Ibn Majah no.594 & Ahmad 1:84, 124].
And in another version narrated by Imam Ahmad, with a good chain of narrators, he said:
ÝóÃóãøóÇ ÇáúÌõäõÈõ ÝóáÇó æóáÇó ÂíóÉð
”As for the one who is Junub; no, not even an ayah." [Ahmad 1:110]