Learning Torah tends to be neglected for the fact that many things are substituted for Torah. What defines ''Torah''? The Rambam wrote in his letters  כשם שאין תוספת וגירעון בתורה שבכתב כמן כן אין תוספת וגירעון בתורה שבעל פה. ''Just like there is no adding or subtracting from the written Torah, so is there no adding nor subtracting from the oral Torah.''

That means the actual books that were the redaction of the oral law written down by the sages of the Mishna and Gemara. These and these alone have the right to be called ''Torah''. And learning them is called learning Torah, Later books might have insights and interesting ideas--but they are not ''Torah,''