Securing home wifi - Time Warner Internet

This question is about "Securing home wifi", with Time Warner Cable internet and apps. Hi All, Thanks for your answers in advance... My computer is connecting via wifi not hardline and I don't know how to make it connect to hardline only any help is greatly appreciated-and I went into ipconfig and saw that I had two networks set up. I don't have 2 networks set up. Third- I don't know anything about security and need to secure my wifi, I have wpa2 set up I believe if I am remembering correctly. Any pointers to a beginners guide and any personal help is greatly appreciated.

This topic covered Securing home wifi, and TWC cable internet service.