If you're interested in a long-term strategy, I'd suggest you a very simple conservative strategy:
1. Split your investment into top10 coins by market cap. You get lower risk and average profit.
2. Rebalance your portfolio once in a month.
3. Enjoy
This strategy works if you believe that the entire crypto market will go up. Considering that, what, 100k new coinbase users signed in a single day at one point, then maybe that's not a bad idea.