Hi there,
Since it seems to come up quite often, I was thinking about making a blog post that simply outlines how to use the command line in Windows 10. However, it might take me a bit of time to get something written up. But don't worry, I didn't forget about you! (^_^);
But in the meantime, if you outline what you currently tried (ie. What you did, what you read about, what instructions you followed), maybe we can help you in advance!