Read the "mhGAP Intervention Guide" sections on "Depression" (pp. 10 - 17 in the document; pp. 25 - 32 in the page navigator) and "Psychosis" (pp. 18 - 23 in the document; pp. 35 - 40 in the page navigator). Please also read Module 10 on "Self-Harm/Suicide" (pp. 74 - 79 in the document; pp. 107 - 112 in the page navigator). After this, you should understand the importance of inquiring about self-harm.