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Ok Sir.
I will tell you.
It may take some days. Due to device problem. I like to manage all thr exchangers throw PC

I cannot possibly advise against margin trading enough. But, if you are intent on starting, Bitmex also has a public test realm. If you are going to start, start here: https://testnet.bitmex.com/

It's honestly shocking that bitmex's own tutorial doesn't show this. Or that someone would just repost someone else's work here without any addition and get this much attention and traction.