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
Trading is not an easy job, I have a couple of advice for you:
1. Do not use margin trading in Crypto its too volatile
2. Always have a risk management plan
3. Never over trade 3 small losses and 1 big profit, a month are better than losing everything.
last, if you want to buy bitcoin buy it gradually like 10 % of your capital in case the price goes lower your buyback at a cheaper price and keep repeating that.
Very nice to found these two suggestions. Every people have their own strategy, and very interesting to adapt and combine those one or other point. Anybody here can help in detail about rebalancing portfolio? I'm still learning about it

Thanks