Hi. I have a question. I want to use free wordpress template I got from internet. I can’t use it, because there is no “Install theme” button, which I saw in tutorial video. What do I need to pay for in order to be able to use it? Is custom design for 30 $ enough to have this feature?
There is no upgrade that you can purchase that will provide FTP access and the ability to upload third party themes to a free hosted WordPress.com blog. To do that you must hire a web host and set up your own WordPress.org install.