With the internet, youtube, pdfs, software etc. i think it is possible but will depend on the subject matter and your access to equipment/resources, and your dedication and ability. I assume by yourself means you can interact with others online still.
Yes your right. With the current resources we have today online, almost everything can be learned. The only problem in the certification that you learn it already. Because there is no such thing as certification for self education. No company will hire you base in self education and without a formal education background. It's sad but that is the reality.