You can learn a lot by trading small amounts, but you have to be aware that when you start investing larger amounts it will not be easy the same way.
If the market has low liquidity, large amounts of money can cause considerable market movements, for the upside or downside. Also, it is much easier to trade with small amounts than with large amounts, because your psychological side is not fully involved and tested to the limits when you do small trades.
in essence, trading with a small amount of many and trading with a big amount of money is just the same if we are just looking at the numbers and not the real value of it. The advantage of starting with small as we can take as many losses as we can before we can have some winning trades and learn how to find ways to have winning trades and rinse and repeat.
Actually trading with a small amount always better than a big amount, because our emotion when trading small amount very comfortable and not worry about the loss. I have tried split my funds 1 BTC to 10 parts and trading with 0.1 BTC until this money can earning profit 10-20% or loss all, however the profit from do that always high than I putting all 1 BTC/order.