diff --git a/user-guide/thunderbird_for_o365.md b/user-guide/thunderbird_for_o365.md
index 9c1055ce..992dc3d8 100644
--- a/user-guide/thunderbird_for_o365.md
+++ b/user-guide/thunderbird_for_o365.md
@@ -1,11 +1,11 @@
 # Configure Thunderbird for 0ffice365
 
-This guide shows you how to access e-mail, address book and calendar with Thunderbird.
+This guide shows how to access e-mail, address book and calendar with Thunderbird.
 
 **Note**: Microsoft currently has a [problem with IMAP and IPv6](https://answers.microsoft.com/en-us/outlook_com/forum/all/thunderbird-imap-responded-user-is-authenticated/062a82f6-e678-4462-88b7-dd6cc318386f?page=3). Inside the PSI network IPv6 is not available, but from home it might be.
 
 ## Account and MFA ready?
-Before connecting to Thunderbird to Office365, you need to have your MFA token/app configured.
+Before connecting to Thunderbird to Office365, you need to have your MFA (Multi-Factor-Authentication) token/app configured.
 
 If you use an app or SMS, then you can set it up directly at [Microsoft](https://aka.ms/mfasetup). Note that when you select the app and use "Use verification code", then you can also use 3rd party OTP apps.
 
@@ -25,11 +25,11 @@ Open Thunderbird. If this is your first account, it will show a account setup as
 
 ![Open Settings](thunderbird_for_o365/thunderbird01_open_settings.png)
 
-Then open the hamburger menu at the top left and select "Settings".
+Then open the hamburger menu at the top right and select "Settings".
 
 ![Search for Certificate Settings](thunderbird_for_o365/thunderbird02_certificate_settings.png)
 
-There type `certificate` into the search box at the top left. Then press below the "Manage Certificates..." button.
+There type `certificate` into the search box at the top right. Then press below the "Manage Certificates..." button.
 
 ![Certificate Manager Dialog](thunderbird_for_o365/thunderbird02b_certficate_dialog.png)
 
@@ -45,7 +45,7 @@ Now tick the checkbox "Trust this CA to identify websites" and confirm this and
 
 ## Configure Your Mail Account
 
-To add a new account open the hamburger menu on the top left. There choose "New" -> "Existing Mail Account...".
+To add a new account open the hamburger menu on the top right. There choose "New" -> "Existing Mail Account...".
 
 ![Set Up Your Existing Email Address](thunderbird_for_o365/thunderbird05_address_entry.png)
 
@@ -101,7 +101,7 @@ Open again the "Settings".
 
 ![Search for Directory](thunderbird_for_o365/thunderbird30_directory_settings.png)
 
-There type `directory` into the search box at the top left. Then select below the "Directory Server" checkbox, followed by clicking the "Edit Directories..." button.
+There type `directory` into the search box at the top right. Then select below the "Directory Server" checkbox, followed by clicking the "Edit Directories..." button.
 
 ![Add new Directory](thunderbird_for_o365/thunderbird31_add_directory.png)
 
@@ -136,7 +136,7 @@ Now select in the "Directory Server" dropdown the newly added `PSI AD` directory
 
 ![Config Editor](thunderbird_for_o365/thunderbird36_config_editor.png)
 
-Now open the "Config Editor", you find it fastest by entering `editor` at the search field in the top left.
+Now open the "Config Editor", you find it fastest by entering `editor` at the search field in the top right.
 
 ![Config Editor Opened](thunderbird_for_o365/thunderbird37_config_editor_open.png)
 
@@ -163,11 +163,11 @@ The calendar can be synchronized using the [TbSync](https://github.com/jobisoft/
 
 ![Open Add-on Manager](thunderbird_for_o365/thunderbird60_open_addons.png)
 
-Open the hamburger menu at the top left and select "Add-ons and Themes".
+Open the hamburger menu at the top right and select "Add-ons and Themes".
 
 ![Search tbsync in Add-on Manager](thunderbird_for_o365/thunderbird61_search_tbsync.png)
 
-In the Add-on Manager search in the top left search box for `tbsync`.
+In the Add-on Manager search in the top right search box for `tbsync`.
 
 ![Install tbsync in Add-on Manager](thunderbird_for_o365/thunderbird62_select_tbsync.png)