What is a universal remote?
Which one do I need?
That depends on the number of devices you want to control at the same time. With a straightforward, cheap remote, you can often already control 5 devices in one go. More expensive products can control more devices at the same time and have smart functions like a touch screen or a smartphone connection. Logitech Harmony is the most popular system and is known for its user-friendliness. It's not the cheapest option, though.