I will advise you to invest in less volatile coin like Bitcoin if you are doing so as a beginner and also for long term investment, it is better to start with the most trusted, credible and popular crypto that risky your money into those that are still finding their foot in the industry.
in my opinion, beginners should invest in altcoin because if I invest in Bitcoin then I don't think it will add insight.
a little risky but has a good effect because even if we fail, we will get a valuable experience.
the important thing is not to invest too much in this direction as learning.