Make sure to find niche you use the products for. Describe why they are better and make life easier for you. If you like the products and use often it is easier to promote the products. Find something you use alot and then make site about that topic and products.
Remember do not make all postive article. List what you like and what could be better. This way people know your being honest and will trust the article more.
Example would be i would give grandparents roku streaming stick with no sound control than one with or some of the new smart tvs that make people feel dumb. It would be simpler for them and make your life better not having to fix any problems and listening to them about how they do not use it because it is too complicated. They would almost always hit wrong button or say something that would cause problem when they try to use it.