Here’s what consumers have asked with answers from HYCM staff and previous consumers.
Hycm lab is a blog, I think so. It has a strange name to it but you can find a lot of useful information in there.
Demo account. Please start with it. Only after you feel confident in trading on this account you can choose the type of real account that suits you best. The fact is that traders often choose the type of account based on the trading strategy that they use. That's why I would advise you to begin by creating such a strategy on a demo account.
I believe here everything depends on the type of account which you have chosen. All of them have different conditions towards spreads and actually not only spreads, also they have different amount of minimum depo and some of them might have commissions. Why do ones need it? Certainly for different trading approaches.