Our Dharma brother, Noble Silence, has written a meditation manual. Fernando describes it in the preface this way:
In this manual, my dear brother, the venerable monk Noble Silence
teaches us many important details about meditation. He has done it very
carefully and truthfully. Read it slowly, calmly, so that you can
understand and assimilate all the good lessons he has prepared. There are
many ways to meditate. Experiment with all of them, so you will know
which way you like the best.
It is available in Spanish here and English here.