Yes. One month of daily hands-on practice, about an hour a day, is enough to learn working Linux basics: navigating the filesystem, managing files and permissions, installing software, reading logs, and controlling processes. It is not enough for professional mastery or a certification; those take three to six months.
Week one: the terminal, moving around the filesystem, reading and creating files. Week two: permissions, ownership, and users, the part that confuses everyone and then suddenly clicks. Week three: installing software, controlling processes, and starting and stopping services. Week four: networking basics, reading logs when something misbehaves, and one small end-to-end project, such as getting a web server serving a page.
That is a genuinely useful skill set. It is enough to run a home server, to stop fearing the terminal at work, and to know whether you want to go deeper.
It will not make you exam-ready for RHCSA, comfortable being paged for a production system, or fluent in shell scripting. Those are three-to-six-month skills. Anyone promising mastery in 30 days is selling something that does not survive contact with a real broken server.
Type everything on a real machine. Watching someone else use Linux teaches you to watch, not to do. Every lab here boots a real Linux VM in your browser in about one second, and your progress is verified from the commands you actually run, so a task counts only when the machine agrees you did it.
The first track is free and assumes zero experience; start there and skip ahead the moment it feels easy.
Yes, if it is hands-on. An hour of typing on a real machine daily reaches basic fluency in four to eight weeks.
Any mainstream one; the skills transfer. Debian and Ubuntu family systems match the most tutorials. Our labs run real Debian-family VMs, and the deeper tracks add the Red Hat family used by RHCSA.
Navigation, files, and permissions, in that order: ls, cd, cat, and friends. That is the exact opening sequence of our free Foundations track.
Start the free track on the training tracks page or see the Linux Bootcamp. More answers: Is Linux hard to learn? and How long does it take to learn Linux?.