There are various ways that you can protect your paint.
Depending on the condition of the paint, you mean to polish it first. There are a lot of polishes that are available on the market. Due to this, it can be pretty tough to actually choose a product that will give you great results, as well as not cost you the Earth. We have though comprised a list of what the best car polish is.
Waxes and sealants can also be used to protect the paint work. Some of these actually bind to the polish made by the same brand, so in that case you should always polish the car first. This really adds an extra layer of protection to your paint. It will also make application easier and allow you to clean the paintwork easier as well.
In terms of stellar waxes, Autoglym UHD wax provides excellent performance at a low price point.