If you are starting a new site and/or want to use HTTPS everywhere on your site, you need to update your site URL in Settings » General by updating your WordPress and site URL address fields.
Enable SSL for google maps from Theme options » Google Maps settings
If created API’s for social logins and payment options before to add SSL you must check them and change pages url added in it.
Paypal setup: http://help.wprentals.org/article/paypal-set-up/
Stripe setup: http://help.wprentals.org/article/stripe-set-up/
Facebook login: http://help.wprentals.org/article/facebook-login/