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README.md

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-# About
-This is a project where I learn how a raytracer works by building one. To accomplish this, I will be following along a few books, in particular the *Ray Tracing in One Weekend* series. 
-
-### Resources Used
-[_Ray Tracing in One Weekend_](https://raytracing.github.io/books/RayTracingInOneWeekend.html)
-
-[_Ray Tracing: The Next Week_](https://raytracing.github.io/books/RayTracingTheNextWeek.html)

README/README.md

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+# :question: About
+This is a project where I learn how a raytracer works by building one. To accomplish this, I will be following along a few books, in particular the [*Ray Tracing in One Weekend*](https://raytracing.github.io/) series. 
+
+The output of this programme is a [PPM file](https://en.wikipedia.org/wiki/Netpbm#File_formats) that contains the rendered image. 
+
+# :camera_flash: Screenshots
+![A screenshot of the bouncingSpheres.](/README/bouncingSpheres.png)
+![A screenshot of the Cornell Box.](/README/cornellBox.png)
+
+
+# :hammer_and_wrench: Building and Running the Code
+To run this code, you'll need to build it as it uses CMake. To build it, go to the root directory in the terminal and run the commands: 
+
+`cmake -B build`
+`cmake --build build`
+
+>The `cmake --build build` command should be run whenever a change is made to the `CMakeLists.txt` file in the build directory. 
+
+To run the code, you run the command:
+- **Windows**: `build\Debug\Raytracer.exe > image.ppm` 
+- **Mac and Linux**: `build/Raytracer > image.ppm`
+
+## Optimised Builds
+This build option is to render faster. 
+
+For **Windows**, run this command to optimised build: 
+`cmake --build build --config release`
+
+And to run the build:
+`build\Release\Raytracer.exe > image.ppm`
+
+For **Mac** or **Linux**, run these commands to obptimise build for the fastest results:
+`cmake -B build/Release -DCMAKE_BUILD_TYPE=Release`
+`cmake --build build/Release`
+
+And to run the build:
+`build/Release/Raytracer > image.ppm`
+
+You'll need an image viewer to view the PPM file. I used [feh](https://feh.finalrewind.org/). 
+
+# :scroll: To Do
+A list of things I wish to implement: 
+- [ ] Triangles
+
+
+# :book: Resources Used
+[_Ray Tracing in One Weekend_](https://raytracing.github.io/books/RayTracingInOneWeekend.html)
+
+[_Ray Tracing: The Next Week_](https://raytracing.github.io/books/RayTracingTheNextWeek.html)