No. of Recommendations: 3
This person summed it up as:

Note that HTTPS = HTTP over SSL (or TLS)

Some VPNs actually establish their connection via SSL. SSL really is a sort of VPN between you and the server, so as long as you don't mind people knowing that you are talking to that server and you don't mind the site knowing your IP, then you are fine to just access it directly.

If you want to avoid letting anyone know what system you are talking to or you want to have a VPN act as a proxy to protect your identity (from the site you are visiting) then you would still need a VPN.

If you are really curious about networking you can google for details but data is sent in packets and as data goes from an application out to the Internet, layers of data are added. And the reverse is true when you receive data (layers are removed).

Items such as port numbers, IP addresses, MAC addresses are added as the data moves from an app to the Internet.

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