You are probably familiar with
www.google.com. For Linux specific issues, there is
www.google.com/linux. That should be your first place to look for information; Linux forums second. And, when you use the Linux forums, use the Search function first to see if your issue has already been discussed.
With regard to swithcing to Linux from windows, it's a whole new ball game. Windows (way back when it was just a shell over DOS) used to have much of the functionality Linux has - I refer to the command-line and scripting (batch files in DOS). If you are not used to it (which most windows users are not) it's a steep learning curve to get a handle on command-line operations.
One thing to do is to download some documentation that can help to make the transition. Such as: Rute User's Guide and Linux Administration Made Easy.
There are many online sites for documentation, tutorials, howtos, etc. Search for them. Fultus e-library is a good one. Linux Self-help is another.
Make use of the vendors website, in your case, the Ubuntu website. Forums and Documentation.
In re drivers: most of what you need will be on the installation media. Some proprietary drivers may have to be downloaded and installed from the vendor's website for the particular driver you need. Example: the kernel supports 2d graphics for nvidia. To get 3d, you have to download and install the driver from the nvidia website.
It will be a struggle at first, but it becomes easier as you learn. Eventually, you may find yourself wondering how people using M$ windows ever get anything done.
