Personally, I for myself identified some good thoughts:
1. Do not invest all funds in one currency
2. Before you buy something, then study the coin in detail.
3. Do not listen to advice, but think with your head.
4. Do not keep funds on stock exchanges, but transfer to cold wallets. (If you buy in the middle or long term)
5. If there is a financial opportunity, then buy a separate computer / laptop for bidding and wallets. Your money is always at risk, do not go to phishing sites and pages, always check them!
You correctly noted the main characteristics. If you will allow me, I will continue this list with basics taken from personal experience.
Greed is the main enemy of any trade. It is never worth waiting for additional growth or a fall, if this is not convincingly said by the forecast, it is better to be safe and stay on time.
Patience is a guarantee of profit.
The volume and capitalization for the markets are the key factors reflecting the mood of other players. Because only knowing these characteristics, you can clearly predict the behavior of quotations.