Word press is great software for making blogs, better than many other blog providers, Simple, goog looking, easy, you may keep the posts private, you may create custom pages, you can create galleries, very nice themes available, it is accessed by google most frequently. Whatever you will post, it will be available on google after 1-2 days.
All that is free
I am very much thankful to the team who has created this system. I am writing this by my own.