نسأل الله لنا ولكم العافية May we in the 2nd level of SOK start reading (simple) books on our own? Something like Bahjat Qulūb al-Abrār, al-ʿUbudiyyah, al-Ashbāh wa an-Naẓāʾir, ʿUmdat al-Aḥkām etc. بارك الله فيكم

Ustadh AbdulAziz al-Haqqan

Sure, but I would recommend that you focus on the works of Imam Ibn Uthaymeen.