There are many reference on this in the scriptures and general conference talks (could search for "ministering", "humanitarian aid" etc).

• General Conferences online (instruction from living prophets -- each Apr. & Oct., 2 days of meetings with talks translated, audio, video, &c (main)
• Scriptures online (the "study helps" / "Topical Guide" and others have large sections on many different interesting topics, showing the harmony among these).
• MANY RESOURCES: search by topics, at www.churchofjesuschrist.org (magnifying glass icon): includes a very good 12-step program, & much, much more. (main)
• (%%todo add direct links to the related scrs)