I am a newbie and would like to invest $1000 to start. I have read that I should put 40 percent into bitcoin and diversify the other 60 percent. I need opinions, advice, and anything from those with experience of positive value. 
If you are still a beginner, it's better for you to choose investments in safe positions, especially with a fund of $ 1000. I think this is a large fund for a beginner. I just want to give a little illustration that bitcoin is the crypto solar system, so here you can conclude that bitcoin will provide benefits in the future. So I think you should invest more in Bitcoin than altcoins. Granted, diversification in investments can help reduce overall risk, but having specific confidence in your investment assets can certainly be the right strategy too. Make Bitcoin Investment a long term investment because it has proven to be the most powerful crypto asset at the moment. The rest you can invest in ETH too because ETH is the second Coin after Bitcoin, Ethereum has become the basis for many innovative projects and smart contracts of course have a great future. Apart from that you can also invest in BNB, because in my opinion this is an interesting altcoin, especially because it is used in the Binance Exchange ecosystem. So far BNB has performed well. In conclusion you have to share your $ 1000 funds into the three coins, my advice is 70% for Bitcoin 30% for BNB and ETH. Hope it is useful.