Dhyanasvarupam composed and commented upon by Swami Tejomayananda in a very simple way first explains the ‘principles of meditation’ by negating what is not meditation and then asserting what it is. Thereafter the ‘principle of the practice of mediation’ is explained.
This is a very popular book and is a basic text for any course on meditation.
Meditation is in vogue and Many seem to be interested in it and practising it. In these days of instant coffee, two-minute noodles and jet-speed travel, people seek instant Realisation through quick means, by instant meditation. But, there is no short cut to meditation or Realisation.