A community site to help site owners migrate to HTTPS with a simple tested process. Allowing you to filter the plan based on multiple platforms (WordPress, Magento, and more), hosting environments (cPanel, Apache, and more) along with the level of control / access you have over the site.
If you can, moving your entire site. It means more work upfront but given the SEO benefits and knowledge that your entire site is encrypted for users is worth it.
However, not all sites are able to do this at one, at the very least you’ll need to setup HTTPS for any login forms, payment pages and any pages that require or reveal user details.An excerpt from Moving to HTTPS