As a newbie in the Crypto world, it's a very nice question you just asked and I believe you are making research more about the crypto world for you to be able to bring this topic.
If I would share a little experience of mine, when I just came into the crypto world I focused on purchasing altcoins, why?
Just because I felt they are more cheaper and affordable. Without much research about the altcoin to buy, I just dived into a pump and dump token, quite fortunate for me I didn't put much fund into my first purchase.
A week later after my purchase, the coin dumped to it's delisting from the exchange and I had to learn how to make research to gain wide knowledge before venturing into purchasing any Crypto asset.
Furthermore, I never knew that BTC can be bought in fractions that's the reason I never purchased since I can't afford to get one piece.
As a newbie and with my little experience shared, I'll advise you to buy little fractions of BTC and HODL for the near future. It is more safer and profit orientated.