Hi, I’ll be glad to help answer your questions.
The best method is to connect the laptop to your TV using HDMI cable. This will be the easiest solution.
To stream, the only option is to use DLNA.
It's easy to setup, here is a step by step tutorial: http://www.pcworld.com/article/2360448/how-to-stream-media-from-your-pc-to-your-hdtv-over-wifi.html