Hi Gondolf,
Yes -- ngondro certainly sorts out the must-dos from the wannabes. For the benefit of participants here who are not familiar with Tibetan Buddhism, ngondro is a preliminary practice required by all schools before embarking on Tantra. That's an over simplifaction, but the detail would be tedious. Ngondro involves:
108,000 full prostrations
108,000 guru yogas
108,000 mandala vi
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