I believe that the best option for a beginner is a demo account.
For a start, maybe a few days to a week that would be awesome.
But after that, what's next?
The actual trading it goes and see if the learnings you've gained through demo account is going to result into good trades and into your fruition with this career.
You should engage in an actual trading of course so that you will have a real life experience that will make you a better trader. And even if you lose, i know it will always teach you lesson so that you won't be making the same mistakes again. But thanks OP for the helpful guide. It's always a good feeling to help beginners since they are still prone to losses but if they can follow your tips, it will somehow minimize their losses knowing they will have the idea what to expect in a real life trading scenario.