Ten psalms
Tikkun HaKlali, established by Rebbe Nachman of Breslov, consists of Psalms 16, 32, 41, 42, 59, 77, 90, 105, 137 and 150 — each available to read here.
A daily schedule
Many divide Tehillim by the days of the month or week, completing the whole book regularly. Even one chapter a day is a start.
Together
Reciting with a synagogue or group strengthens consistency. This article is for learning, not a halachic ruling; for practical questions, ask a qualified rabbi.
Sources
Tikkun HaKlali · Daily Tehillim · Psalms online