A few things to remember we all have a lot to learn. We are at the start of crypto not something that is even widely used to this point.
Research a lot, do not take anyone's word for it just because they are famous, have a lot of twitter followers, etc. If you see a lot of people start pumping a coin / token be leery.
Do not trade on emotion and never more than you can afford to lose. There are a lot of good projects out there and a lot of scams.
Look at the big dogs for coins (BTC, ETH, LTC) keep a good percentage of your base there then find some projects in areas that interest / excite you. Do you like logistics, security, disruption, real estate, dating, art, gambling, pharma? Find some projects in some of those areas research them and if they seem solid get behind them, invest join the community, get involved.
Make sure you have good security (passwords, offline wallets, vpn, antimalware, etc). NEVER send tokens for the promise of free tokens in higher amounts.
There is a lot of opportunity don't let yourself get burned with greed or trading on emotion.