Sticking with what I wrote above, protecting and healing the spirits may be rather complex and will depend on a lot of things, namely your personal healing abilities and areas of talent.
But protecting yourself with magick is a basic of the Craft- have I got some spells for you! 
Rather than list each spell one by one, here is the link to an entire Collection of Protection Spells:
My personal favorite method of protection (that stays with you on the go- great for traveling!) is by enchanting jewelry. I especially recommend using crystal beads- you get the benefits of the crystal (especially if you use a Crystal of Protection), can enchant the bracelet with your intention, and then can easily wear it while out and about.
I hope you can find protection methods that work for you- there are a lot out there, so keep trying until you find the perfect match 
Good luck and blessed be, Tammy! 