If you've purchased cable internet service, find a cable port in your house to connect the modem to. If you've purchased DSL phone internet service, you'll need to plug the modem into your home's ...
If your thought repurposing DVB-T dongles for generic software defined radio (SDR) use was cool, wait until you see QCSuper, a project that re-purposes phones and modems to capture raw 2G/3G/4G/5G.