I want to make a permalink to my most recent blog post. I would use this link as a navbar link. The reason I'm not putting code straight into the navbar is because I am using a widget which will not let me get into the code, and my coding knowledge is next to none. Could someone ELI5 how to do this and where to insert any php if needed. Thanks in advance.
EDIT: Could you also explain how I would implement the PHP code or where I would put it in the WordPress environment.