It's very easy to add Facebook page in Blogger. You can easily add your Facebook page in your blogger step by step tutorial is given below.
Step 1. Go to Google search engine and open the Facebook page for developers.(search"Facebook Page Plugin") then click on first link ("Page Plugin - Social Plugins - Facebook for Developers").
Step 2.When you open Facebook Developers page, now you should write "Facebook Page URL"In this option you have to write the URL of your Facebook page.
Step 3. After doing all of this, you will get an option called "Get Code" on the below, you have to click on it.After clicking on "Get Code" you will be given two codes. You have to bring both of these codes inside your blog.
Add the codes inside the Blogger: First HTML code you have to put inside the body tag of your Blogger.
Step 3:Place the second code wherever you want the plugin to appear on your page. suppose that if you want to put your Facebook page in Sidebar, then you have to go to Blogger Layout option and in the Sidebar you have to add html / javascript gadget and paste the code in html / javascript gadget And save it. And after that you have to save the layout.