I have a 2008 Sony Bravia tv. Model is
KDL-32L4000. Can I use Roku with this tv?
I have always had cable and have no idea where to start
which Roku is best? After I buy it , then how do I get channels to watch?
KDL-32L4000.has 2 HDMI ports, so any model Roku currently available can connect to it.
I would suggest getting one of the models supporting 4K resolution. They will provide you service should you upgrade to a 4K tv in the future, but will work fine on your current HD set.