Update CUDA notes

se/frameworks/cuda.md

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+NVIDIA CUDA (Compute Unified Device Architecture) Toolkit, for programming CUDA-capable GPUs.
+
 ## Resources
 
-- [OWASP](https://owasp.org/)
+- [NVIDIA CUDA Installation Guide for Linux (NVIDIA)](https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html)
+- [NVIDIA CUDA Installation Guide for Windows (NVIDIA)](https://docs.nvidia.com/cuda/cuda-installation-guide-microsoft-windows/index.html)
+- [CUDA GPUs (NVIDIA)](https://developer.nvidia.com/cuda-gpus)
 
 ## Installation
 
 ### Linux
 
-**Ubuntu (APT):**
+The toolkit on Linux can be installed through the package manager or through a runfile (script). Using the package manager method is recommended whenever possible. The toolkit also requires a matching NVIDIA driver to be installed.
+
+**Ubuntu:**
 
-TODO
+1. Install NVIDIA driver.
+    - Typically through the "Driver Manager" on Ubuntu-based distros, which installs it through the package manager.
+    - See 
+1. Install build prerequisites: `apt install build-essential linux-headers-$(uname -r)`
 
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