When your site is deployed it is important that you enable Netlify Identity. You can find this is on your site's control panel on Netlify.
Identity > Enable Identity
It is important that you enable identity for only those who are invited. You don't want others making changes to your blog.
Settings > Identity > Registration > [✔] Invite Only > Save
Last thing we need to do is invite you to edit your blog.
Identity > Invite Users > [Input your email] > Send
You will recieve an email from Netlify for you to accept the invite.
You can go to yoursitename.com/admin to login to the CMS