You will remain a little lost with all the coins and the tokens, no matter how long you are in here. No one in here knows most of them. Most of them won't even exist after a a while.

And you'll probably hear lots of cliche answers on basic investing that we all have heard before, but in reality, this isn't investing. Same rules won't apply as they do in real world. Fundamentals work differently as different things matter. So it's anyone's guess what's a good pick. And no one really knows what's the optimal way to invest in crypto.

If you invest risky, you might make more money, but thing you don't often hear is that you'll also end up being worried every day and you lose a lot of time watching the charts.
If you invest "safely", you probably make way less profit, but at the same time you can have more free time, and when time is money and you can relax, in hindsight i should have picked this road most of the times.

There are no "right" coins to put your money into, but coins with highest marketcap are your safest bet (not usdt and other stablecoins though).

What ever altcoin you'll end up choosing, avoid becoming a maximalist for that coin. Even though it's the easiest road as learning about new coins is extra work. Remember that any altcoin community probably try to brainwash you to believe that their coin is the next bitcoin, and only solution as other alts are fake and scam. So you'll get stuck on your new fav altcoin and leaving gets harder as you'll lose objectivity. And cashing out will become next to impossible, as you'll end up believing it will just keep on rising, even when it is going down.

Also most o people in this space is trying to convince you that their bags are going to rise. They are going o lie about the targets, and when these people are yelling that it's going to moon and getting you fomoed on the price growth, they are actually looking for their exit and trying to sell their bags. This might sound cynical but that's what years in this space do to me.