Make sure you have backed up your template before installing a new one. (You can also install a XML template ). 1. You have to choose a Html Template 2. Copy the code ( Ctrl A : Select All, Ctrl C : Copy) 3. Go to your Blogger Control Panel - Edit HTML 4. Revert to Classic Template (You can return whenever you want). 5. Paste the code into the Template area ( Ctrl A : Select All, Ctrl V : Paste) 6. All done!