Hello
How could I put the Forum's Name in default templates header?
Use the following variable to place your website's name;
{$mybb->settings['bbname']}
Thanks dear Yaldaram
But where should I put the variable? I mean into which file?
MyBB holds templates in the database, not in files. You can edit them through the Admin CP.
In this particular case you can go to Admin CP > Templates & Style > Templates > Your Template Set > Header Templates > header and place the variable wherever you want.
I found it.
Thanks a lot dear Fabio.