You can't, you can only change the url to another account but not the blog itself.
NO
To change your theme on tumblr, you can try going to settings and then clicking customize my blog, or you can try going to different blogs, selecting which one you like and then pressing install.
You can blog about anything on tumblr.
Just that. A blog on a site called tumblr.
It's easy to customize your blog's theme on the Tumblr app for Android. Just go to your blog page and click Edit at the top. From there you can change your theme and customize its colors and fonts
you can't name my tumblr blog.
youre URL? go to the blog settings which is on the right of the screen after you click on your blog.
Go to their blog page and in the upper right corner there is a button that allows you to follow (or un-follow) them. When you are logged into your account, you can toggle this to change who you follow.
It's just a blog. The owner is now idle. He never checks on the account
You don't need an account to look at any blog at all, just to make posts of your own and reblog.
To get the follow me icon get the like button code through your Twitter account. Then copy paste this code into your tumblr blog. Go to Tumblr Dashboard >> Your Blog >> Customize >> Edit HTML Here paste the Twitter like button and place it properly.
You can do it but it is against the US law. If you wait until you're 13 you are legal age for a Tumblr blog account.