Mindfulness - Your Present Moment

An excellent site to find  texts regarding Mindfulness is at the website of the Vipassana Fellowship They have an online 90 day meditation course which they have hosted since 1997. Courses usually start in January, May and September.  May 2nd is the next starting date.

They have online the book Mindfulness in Plain English by Ven. Henepola Gunaratana.  Well worth the read to gather an understanding of what Mindfulness is and what it isn’t.

Also suggest that you read The Foundations of Mindfulness (the Satipatthana Suta)