Howto: Laptop/PC + "Internet via ADSL/PPPOE/DHCP" as "router via WAN" to Tablet

[rajibando]

I have a Huawei MediaPad 7 Youth 2 with Android 4.3. I have a 2G SIM from BSNL, karnataka, and charged it with 2G data plan. The transmission is very slow and I can't install apps. The data network gets disconnected frequently.
Is there a way to use the PC's broadband internet connection via some way? There is a tethered USB option in my tablet. Can it be used?
Is there a way to use the PC's wireless networking? To make the PC/Laptop as a wireless router and the tablet use that WAN network?
There is a post: How to Debian linux act as a router
Also, there is a debian article, NetworkManager
Also, another post Debian / Ubuntu Linux: Setup Wireless Access Point (WAP) with Hostapd
The matter appears beyond my present abilities.
The articles are conflicting. Moreover, I wish to use the Network Manager applet and to make the PC/Laptop as a wireless router and the tablet use that WAN network.
Or, any other simple way possible...
Please note that my internet service provider, BSNL, provides a dynamic IP for my connection plan. Hence, I don't wish to overwrite the files /etc/network/interfaces and sysctl.conf
Please advise.