Hoq LeYisra'el, Shnayim Miqra:

The Ari HaQadosh instituted "Hoq LeYisra'el", and nowadays is a commonly known practice. In fact, HaRab Ben Sion Abba Sha'ul (Israel 1924-1998) writes (Or Lesion) that there is a real obligation on every Jew to learn Hoq LeYisr'ael. Although, HaRab Yis'haq Yosef doesn't require Yeshiba students to learn from Hoq LeYisr'ael on a daily basis.

However, "Shanyim Miqra WeAhat Targum" is a Halakha brought down in Shulhan Arukh, and in the Gemara Berakhot. So, one must be meticulous to say "Shnayim Miqra WeAhat Targum." Maran explains how to recite Shnayim Miqra: read the Pasuq twice, and then read the Targum Unkelus. Some opinions hold, that one should read the Pasuk twice, and then read Rashi. Some opinions hold, that one should read the Pasuq twice, and then read Rashi and Unkelus. Maran holds that the official way of doing Shnayim Miqra, is by reading the Pasuk twice, and then the Unkelus. Although, Maran writes that a Saddiq should read the Pasuq twice, then read the Rashi, and then the Unkelus.