I bought and read 'The Patient's Guide to Heart Valve Surgery' by Adam Pick, and 'Coping with Heart Surgery and Bypassing Depression' by Carol Cohan. They were both very informative and helpful. I shared them with my family, who also learned a lot from the books. I highly recommend either or both of them to ANYONE facing heart surgery of themselves or a loved one.
I have a Heart Valve Journal. I used it primarily for disseminating information to my family and friends through the surgery and recovery process. I invited everyone on my email list, my facebook list, my work contacts - anyone who might possibly be interested. My husband was able to post updates while I was out. There is a lot of support from previous and future heart patients on that site, in addition to feedback from friends/family/coworkers. They love me and just want me to get better!
I have not shared this site with anyone, not even my husband. This allows me the freedom to post ANY question without worrying what my family/friends/coworkers will think. It's nice! I don't have to worry about my entire family knowing my deepest darkest fears. I don't have to worry about my friends knowing how I'm dealing with my monthly cycles post-surgery. I don't have to worry about my squeamish coworkers knowing that the drainage tubes make a sluuuurrrrrrppppshshshs sound when they're removed. You guys love me, and want the gory details, and want me to get better.
Read the books. They help quell the anxiety and fear.