Most beginner guides show you the final shape. This one spends more time on what goes wrong on the way there — the small adjustments that separate a pose that helps from one that just hurts.
Seven poses that show up in almost every beginner class, broken down past the final shape.
Four pranayama-rooted techniques, each suited to a different goal — see Guided Practices by Goal for which one fits what you need right now.
These aren't specific to any one technique — for full breakdowns of individual methods like Vipassana, Zazen, Metta, and Trataka, see Deep Meditation Forms. This is what trips up almost everyone regardless of which technique they're using.
Meditation on Wikipedia · NIH: Meditation and mindfulness · Guided practices by goal