Kali Linux: Manufacturer says they do not provide drivers

I am using Windows 7 on my Toshiba Satellite series laptop. I want to install Kali on it, but when I checked the Toshiba website, I found they do not provide device drivers for Linux. So, does this mean I will not be able to use Wi-Fi on my laptop due to non-availability of a WLAN driver? Also, what about other drivers like Ethernet drivers? Do you know of any alternative source(s)?