Look at your instructions. Look for an HDMI socket, most TV's theses days have several, any one will do. These days, if the plug fits the socket it will usually work. DVD players will have either or both hdmi or optical outputs, the plugs for these are totally different and cannot be confused.
I suspect you will find at least 2 hdmi sockets, labeled HDMI1 and HDMI2. On your TV you will be able to select these as the inputs.
If you do not have a DVD player, your laptop can also be connected to your TV with an HDMI cable and dvd's played via your laptop.