I have traded on stock exchanges placing Good To Cancel Limit Buys of stock shares at below the posted prices and found it easy.
Buying cryptocurrencies at the Market Price is also easy, however, I need help understanding how to place Limit Maker Buy Orders. I think in terms of US Dollars and I do not know how the dollar relates to the long decimal numbers of a high flying BTC. I would like to learn how I could put $100 and place a Limit Order to acquire more BTC than its current price amount with a Good Til Cancel order.
I know if I click on the active BTC chart on GDAX such a fractional amount will be immediately pasted on the Order Field, but I do not know how to put a $100 toward acquiring that below-market amount.
If you can post a step by step procedure that would help.