Getting Ahead of Myself?

I regularly frequent wedding blogs, photography sites, etc to get ideas for my wedding... even though I have no ring yet.  I've decided on some things I want/don't want, things I want to try to do myself, and realized I still have no idea what I want in certain cases.  

I wonder sometimes if it's bad to throw myself into it when we haven't even made that jump yet.  Just hope I'm not setting myself up for disappointment.