Most bloggers would like to have others comment in their blog. It is not necessary to allow registration for this. This function is enabled for you by default. I checked the option by entering settings section — > discussion — > default article settings — > allow people to comment on new articles. The box should be checked.
There is an easy way to add and edit registered users of the WordPress site. I entered the admin area of my blog. In the left sidebar there is the “Users” submenu. The registration of new users is disabled by default. Still, I can register them myself through the admin panel using the “add new user” function. It’s safer to not give anyone the role of the administrator.
When I wanted to let people register on my blog, I entered the admin panel — > settings — > general. The checkbox next to the line “Membership” was unchecked. I checked it. The next line “New user default role” sets the role of the user as soon as he/she registers.
Later it will be possible to change the role of the user at the “Authors & Users” section.
The administrator can edit any user profile: add contact info, change password and address. It is possible to change user nickname and use it for public display. The user name can’t be changed.
I can change my profile in the “your profile” section.
From that moment anyone could register on my blog. So, I had to protect my blog from spam registrations and I had to be careful about giving users the appropriate roles.