Hash tags

How should I use hash tags? Use hash tags that are relevant for my post (in my case Motorsport or such like) and something special to me like my brand name or something special to that type/genre of my post like (#PitStopStrategy)?

Darren Crothers tells me "don’t over use them, have too many and keep them relevant. The idea is that people use tags as a cross category search.

In website blogs for instance, it’s a good idea to create your tags in advance and choose them from a list if you like you can add more but keeping them consistent is more effective.

On IG you wanna see what’s being used the most but it’s a catch 22 cos you use the most common tags and you’re competing with everyone else using that same tag, so it’s about the quality and relevancy of the tag you use"