Well, there's always lots to write about. So I really hope you take your inspiration and spread it far. Beyong Illumination (where I also find many of my friends) to other publications of poetry and the one I mentioned which is about teaching and sustainability, love of nature.
Your practical question: type @ and in my case @driesenaar and it will automatically turn into a tag. If you want to see what name someone has, cgo to their profile and look at the url on top. It shows there... I will see in my notifications then that you tagged me.
Some people like to be tagged, some less. So be aware not to go spamming. But I like it. There's so much going on and some writers (especially the ones about nature) I want to follow closer than others...
Happy writing. mingling and reading!