Here is a tutorial about modifying Mozilla Firefox shortcut on your desktop, so that when you open Firefox by double clicking on it, it opens all your favorite websites in different tabs!
First , We have to create a copy of the shortcut of Firefox on the desktop , We will rename it to “Firefox – MyTabs”
Right-Click on the newly created shortcut, Go to Properties and Modify the target as shown below
“C:\Program Files (x86)\Mozilla Firefox\firefox.exe” www.mytechyard.com www.facebook.com
This will open two tabs of the listed websites (kindly modify the Program Files path properly, to make sure just append the website addresses to the existing program file path)
This is the result when you double click on the shortcut