Many "free PDF" sites host copyrighted material illegally. For classic, public domain Kabbalah texts, try these instead:

If you speak Spanish (given "libro" in your search), here are genuine starting points:

May your journey into the world of Kabbalah be enlightening and enriching!

Escrito por Laibl Wolf, este libro ofrece una guía para aplicar la sabiduría judía en la vida diaria. Está disponible para consulta gratuita en el Internet Archive .