Here's an entire category of articles written by Slade Roberson, a professional clairaudient psychic who's "day job" is to connect with spirit guides ("clairaudient" means he "clear hearing"... in other words, he can hear them):
Spirit Guides | Shift Your Spirits
On the topic of spiritual protection, here's a post I wrote (there are other posts you can read in the thread, too):
Psychic self-defense, yes or no?
I recommend watching the video I linked to in the post I linked to above.