The domain ranking will not pass to the subdomain. The subdomain is treated like a separate website. This means that if you get ten backlinks to your main site. The subdomain will still have zero backlinks. I would not create a different website either for your trainers. Your new trainers would s...
Hi, The language annotations are a best practices conducive to a better organization of your web pages within country and language SERPs. They won't provide higher rankings. They will, however, produce a better experience for users who will find content that is intended for certain geographies, ...