One thing I would advise is not to focus on altcoins as that's what many f those that think are too late do. They see memecoins and similar crap making crazy ROI in very short period of time, and then they see BTC being $40k-50$k, they get disheartened so instead slowly accumulating BTC, they opt for altcoins and end up being rekted.

I did similar mistake back in 2013. I thought that I was too late to the party as I couldn't afford one whole Bitcoin so instead buying fraction of it, I went for altcoins, bought GPU and spent money and time mining shitcoins and ended up with nothing in the end. I took a break and came back to crypto in the early 2017 but this time I was smarter and went for BTC instead, even though some told me that it's too late now, back when BTC was around $1k which is now dirt cheap price.