There is no limit in regards to the capital you need to begin trading.
You can start off trading with as low as $10 or as high as billions. All it depends on how much you can afford to start with trading.
I started trading with $1-$2 in 2016, that was the start. At that time all of my investments were as part of long term strategy.
The above statement is less important, the most important thing is the strategy, plan and how you can avoid common mistakes.
You may learn some of the common "Mistakes newbie makes in trading resulting to losses"
My suggestion will be to start with as low as possible and taste the crypto trading for some time and learn the positives & negatives.
If you slip then it will not break you, but give you strength to think with the mistakes you made. Come back again with higher capitals when you have learned how to control those mistakes.
This is called PRACTICAL EXPERIENCE, nothing can replace this nor you can buy this anywhere.