Marketing my coaching business/ website language

I have narrowed my niche down to weight loss for middle-aged women who want to lose 15lbs. I want to work with women who have struggled with gaining and losing this amount of weight for years, who do not want to go on a diet, but want to stop this gain/loss for once and for all and to be happy with their bodies.

Do I put all this detail on my website and in marketing copy?

Is there a place on Scholars where there is training for creating marketing material?