Here are just a few links to some resources that you may find useful.

Jurgen Ziewe Multidimensional Man

Author and Book Recommendations:

For anyone who has lost a loved one:

Michael Newton:
Journey of Souls, Destiny of Souls, Life Between Lives Hypnotherapy

George Anderson:
We Don't Die, Lessons from the Light

James Van Praagh
Talking to Heaven, Unfinished Business: What the Dead can Teach us About Life

John Edward:
One Last Time

Other recommended Authors for the Loss of a Loved One:

Raymond Moody
Elizabeth Kubler Ross
Dannion Brinkley
Bette Eadie
Concetta Bertoldi

For Past Life/Reincarnation exploration:

Brian Weiss:
Many Lives, Many Masters

Denise Linn:
Past Lives, Present Miracles

Michael Newton:
See above list

For Out of Body, Lucid Dreaming and Astral Travel exploration:

Robert Monroe:
Journeys Out of the Body, Far Journeys, Ultimate Journey

Robert Peterson:
Out-of-Body Experiences: How to Have Them and What to Expect (free online book) and all of his books

William Buhlman:
Adventures Beyond the Body and all of his books

Robert Bruce:
Astral Dynamics

Jurgen Ziewe:
Multidimensional Man
Vistas of Infinity

Stephen LeBarge:
Exploring the World of Lucid Dreaming

Carlos Castenada:
All the Don Juan Series books

Psychic/Intuition Development and Connecting with Angels and Guides:

Doreen Virtue
All of her books