[How To?] Editing

[Dima_Gamer]

I've just started using MyBB as my fourms software. I know how to add / select the themes. I'd like to know If I can edit the themes. Also I'd Like to know how to edit for example the 'About us" Menu. Thanks!

[.m.]

basically theme consists of html equivalent codes through templates
and style properties through css stylesheets.

theme needs to be edited through Templates & Style section of forum admin panel.

more details : Template and Theme Editor | Templates | Themes

Edit:
top menu links codes are available in the header template (& its related templates) of the theme

forum admin control panel >> Templates and style >> Templates >> [your theme templates set] >>
Header Templates >> header

[Dima_Gamer]

Can I get a list of names for each part? For Example - The Boxes on the Side

[.m.]

MyBB's Stock Theme doesn't consist of the side boxes.
can we have your forum url & which theme you are using ?

[Dima_Gamer]

I am using Focus - mineblock.ga