I am starting my day trading career small with 5k, once I can prove it to myself that I can make money consistently, I will probably go to 10-20k. For now let it earn 4.5% in the bank.
When I get good and have a tradomg account with 100k plus I will probably pull most of the money out and put it in safe investements until I learn how to scale in and out with larger size positions.