I can not get the tablet to connect to the internet

I've known some tablets not connect to the standard 2.4G wifi but are quite happy on the newer 5G wifi. don't know why.
I've also known some tablets only connect to WEP security or none.
see if you can change the security settings in your router.

Most tablets connect to the internet through WIFI. Only a few can use SIM card to connect through 3G or 4G data connection. For WIFI connection, you must have a WIFI router at home. You will normally password-protect the WIFI rounter. To connect the tablet to the internet through the WIFI-router that is in operation, you will configure its WIFI settings to match the router's password. This will be done by going to tablet's Setting, turn on WIFI, click on your router in the list of detected routers, enter the password when prompted. Ensure that Connected is shown against your router. You can then browse the internet.

Do you try to connect to the Internet when at home or away from home ? At home, you need to have a wireless (WiFi) network to connect your tablet to and then access the Internet from your tablet. Away from home you need to find an OPEN WiFi network (usually in public places such as coffee shops, bookstores, etc) to connect to. Or you can get an USB mobile/cellular modem from your cellular provider to attach to the USB port on your tablet and access the Internet at home and/or away from home (this option will cost you money). You also need to install on your tablet apps that will access the Internet (browsers, Pandora, Youtube, etc.).

You don't need internet, to put data on a tablet (or on a computer) entering data, is typing a note, or making a picture. Then save it. That is how data becomes data. But if you want to receive data from the internet, most tablets need a wireless connection. And unless you have a hotspot close to home, the only way would be to visit a Starbucks or McDonald, where they offer free WiFi, while you are consuming there.
More and more firms offer free WiFi, when you are visiting them.
If you want WIFi at home, you first need an internet connection. If you already have an internet connection for a computer, you could buy a wireless router and connect it to the same router you already use for the computer. If you don't have an internet connection, you should get one. Most providers, now offer routers with WiFi and cable connection.
Sometimes if you have a smart phone, with internet connection, you can setup our phone as a hotspot for your tablet. But some providers try to block that.

And soem tablets do have a possibility (they cost more) to insert a sim card. For those you goto a provider and arrange a data plan for the tablet.

I hope this helps. Make sure you don't have a WiFi router, before you buy one.

This looks to be a WiFi only tablet. Do you have a WiFi access point to connect to or have a free one somewhere like WalMart/MickyDs etc. You then need to make sure your WiFi is turned on your tablet and then connect to the access point. Once connected you can use a browser to access the internet.

look for proxy in the internet settings.

When creating a connection to internet, you need a point (read : router) which facilitates this. If you don't have a router in your neighbourhood, you can't connect to the internet. Even if there is one near you, you must be able to see it, by checking at your tablet for wireless connections. However, some routers are set to accept only connections, when a user ( your tablet) can provide this password everytime it tries to connect to the internet.

Schematic of internetconnection :

Tablet --- WiFi Router --- Modem --- Internet(provider).

Go into setting and push unknown and you I'll connected