The NT 8.0.28 Multi-PC version allows a Rithmic connection to the Rithmic Paper Servers, which is what TFD uses. But, if it is a dedicated node Rithmic server, those are not in the list built in to NT, and one cannot connect.
MT4 is definitely a good option to start, to learn and employ the basics of trading. But NT allows for better and proper charting, along with the benefit of maybe using actual transaction volumes, DOM, footprint, large trades, and other things that proper datafeeds allow for. And they are expensive as a monthly fee, so free or close to free can be a good cost savings. It should also be possible to get trial Rithmic and CQG datafeeds that last 14 or 30 days, and then when requesting it again, use a (free) VPN to have it originate from a different IP address, and use a temporary email where they send you your ID & password.