FOCUSED ATTENTION MEDITATION
Focusing the attention on a single object during the whole meditation session.
This object may be the breath, a mantra, visualization, part of the body, external object, etc. As the practitioner advances, his ability to keep the flow of attention in the chosen object gets stronger, and distractions become less common and short-lived. Both the depth and steadiness of his attention are developed.
OPEN MONITORING MEDITATION
Instead of focusing the attention on any one object, we keep it open, monitoring all aspects of our experience, without judgment or attachment.
All perceptions, be them internal (thoughts, feelings, memory, etc.) or external (sound, smell, etc.), are recognized and seen for what they are. It is the process of non-reactive monitoring of the content of experience from moment to moment, without going into them.
Examples are: Mindfulness meditation, Vipassana, as well as some types of Taoist Meditation
EFFORTLESS PRESENCE
This is where the state attention is not focused on anything in particular, though reposes on itself – quiet, empty, steady, and introverted.
We can also call it “Choiceless Awareness” or “Pure Being”. Most of the meditation quotes you find speak of this state.
This is actually the true purpose behind all kinds of meditation and not a meditation type in itself. All traditional techniques of meditation recognize that the object of focus and even the process of monitoring, is just a means to train the mind, so that effortless inner silence and deeper states of consciousness can be discovered.
Eventually both the object of focus and the process itself is left behind and there is only left the true self of the practitioner, as “pure presence”.