Typing equation is very difficult for new user the main problem is using mouse for each time when you type equation and selecting options from equation bar even its take long time for clicking on equation icon to open equation editor. Today I try to change your way to working with equation editor.
To open equation editor click on "Insert" "Object" "Microsoft Equation 3.0" and click "Ok" equation editor box will appear. The main difficulty is need to click equation icon for each time when you type equation, here I solved this problem with shortcut key. (see video end of this article to know how to create shortcut key to open equation editor).
Some important shortcut keys
See video for all shortcuts