There are just a few steps needed to add video to your blog.
Firstly set up a free account with either youtube or vimeo and follow their instructions for uploading a video to your account.
(I will assume you chose youtube, but vimeo is almost identical)
Now click through to the video’s page and click the ‘share’ button
now click the ’embed’ button
A few lines of code will appear. Copy them (CTRL+C) and go to your blog, log in and create a new post.
Now switch to ‘html view’ and paste (CTRL+V) the code in the blog content area.
As soon as you publish your page, the video will be visible inside it.