Blog about Nursing Experiences

Sorry if this is a silly question, but I wanted to start a blog about my nursing student experiences and my first year as a registered nurse (..and then go from there- If i have time that is ) but what i was wondering was if starting a blog would be okay? Are there any legal issues with this... Of course i wouldn't write down any names of patients or coworkers and the facility in which i would work.
I read lots of nursing blogs. I'd say it's okay as long as you stay anonymous. Don't mention the town or school or clinical site or names.

Be very very very very careful.