When you first start trading, start with a small amount of funds, analyze the market and find experience through trading. The price volatility of cryptocurrency makes trading difficult. It is necessary to have trading skills and strategies and trade within the range of funds that can be tolerated to reduce trading risks and economic losses.
You said when you start trading, you should always start with small amount, am not completely in support of that, if you are trading as a newbie you should always start with a small amount but as a professional I don't think you have to enter a trade with a small amount, but as a newbie you have to always start low.