The first step would be to engage the services of a local attorney. The Attorney would assist with the identification of your trademark and will also identify the best trademark class or classes to protect the trademark in.
What are trademark classes?
According to the 2018 version of the 11th edition of the Nice Classification of trademarks there are 45 trademark classes. The Attorney will be able to advice which class or classes the trademark application should be filed in.
What country should I protect my trademark in?
The country a trademark is protected in is the country or countries where the goods or services bearing the trademark are used. It is also important to protect the trademark in countries where the trademark may be used in the future in order to prevent competitors from taking advantage of the lack of presence of a particular trademark in a country.