I’m about to complete my Hijama course. However it’s being taught by Sunnis. I have 3 questions.

1)Do the the Ahlul Bayt (as) recommend doing hijama on special days?

2) Can you recommend or where can I find book/s (in English) that cover hijama and also remedies so I can best help my clients inshallah?

3) Am I permitted to perform hijama on men ensuring of course I do not touch them?

I found this link in English: