What makes Blogger/Blogspot, so easy to use, is the fact that you just need your Google Account to get started. Getting a linked blog URL is free, which means you can get started right away if you want, but if you do own a custom domain, you can easily link your blog to it and take it from there.
To make things easier, Google has also provided a dedicated Blogger/Blogspot app, that is available for a free download on the Android Play Store.
