The whole wiki can be read without an account. A free account lets you take part:

• Comment on pages: hero, event, building and resource sheets.
• Save your research tree progress on your account, to find it again on another device.
• Find all your comments in "My Account" and delete them whenever you want.
• With the "Editor" role, granted by the administrator: save talent trees on hero sheets.

• A username and a password are enough: no email address is asked for.
• The administrator then approves your account; you can comment as soon as that is done.
• Keep your password safe: without an email address, it cannot be sent back to you.