If you want you can also do this by visiting the ‘Facebook Social Plugins’ page and you can create a fully decustomised Facebook like box for your blog but that is second option you can use, but first you can use the given code to quickly add a Facebook like box in to gadget just copy the below code and paste it into your blog just follow the steps below.
<fb:fan profile_id=”294662050580421” stream=”0″ connections=”10″ logobar=”0″ width=”295″></fb:fan>
<div style=”font-size:8px; padding-left:10px”><a href=”http://www.facebook.com/pages/It-Makes-Computing-easy/294662050580460“></a> </div>
1- Sign in to your blog
2- Now go the Design then click on add a gadget chose HTML gadget.
3- Copy the above code and paste it into the HTML gadget.
4- Now change profile_id that is in red with your profile_id see above code.
5- Now change the Facebook page URL page with your page URL.
6- Just save and you are don.
And if you want to add custom Facebook like box then you can visit Facebook ‘Facebook Social Plugins‘and you can create a custom like box from there.