Add Useful Resources and Example Build Instructions to CONTRIBUTING.md (

open-telemetry#97)

CONTRIBUTING.md

@@ -20,6 +20,33 @@ convention](https://google.github.io/styleguide/cppguide.html#Naming).
 
 Code is formatted automatically and enforced by CI.
 
+### Build and Run Code Examples
+
+Note: these instructions apply to examples configured with Bazel, see example-specific documentation for other build automation tools.
+
+Install the latest bazel version by following the steps listed <a href="https://docs.bazel.build/versions/master/install.html">here</a>
+
+Select an example of interest from the <a href="https:/open-telemetry/opentelemetry-cpp/tree/master/examples"> examples folder </a>. Inside each example directory is a `BUILD` file containing instructions for Bazel. Find the binary name of your example by inspecting the contents of this `BUILD` file.
+
+Build the example from the root of the opentelemetry-cpp directory using Bazel. Replace `<binary name>` with the identifier found in the previous step:
+
+```sh
+bazel build //examples/<example directory name>:<binary name>
+```
+
+Run the resulting executable to see telemetry from the application as it calls the instrumented library: </li>
+
+```sh
+bazel-bin/examples/<example directory name>/<binary name>
+```
+
+For instance, building and running the `simple` example can be done as follows:
+
+```sh
+bazel build //examples/simple:example_simple
+bazel-bin/examples/simple/example_simple
+```
+
 ## Pull Requests
 
 ### How to Send Pull Requests
@@ -72,3 +99,33 @@ A PR is considered to be **ready to merge** when:
 * Urgent fixes can take exceptions as long as it has been actively communicated.
 
 Any Approver / Maintainer can merge the PR once it is **ready to merge**.
+
+## Useful Resources
+
+Hi! If you’re looking at this document, these resources will provide you the knowledge to get started as a newcomer to the Open Telemetry project. They will help you understand the Open Telemetry Project, its components, and specifically the C++ repository.
+
+### Reading Resources
+
+* Medium [article](https://medium.com/opentelemetry/how-to-start-contributing-to-opentelemetry-b23991ad91f4) (October 2019) on how to start contributing to the Open Telemetry project.
+* Medium [article](https://medium.com/opentelemetry/opentelemetry-beyond-getting-started-5ac43cd0fe26) (January 2020) describing the overarching goals and use cases for Open Telemetry.
+
+### Relevant Documentation
+
+* Open Telemetry [Specification](https:/open-telemetry/opentelemetry-specification)
+ * The Open Telemetry Specification describes the requirements and expectations of for all Open Telemetry implementations.
+
+* Read through the [Open Telemetry Collector](https:/open-telemetry/opentelemetry-collector) GitHub repository
+ * This repository has a lot of good information surrounding the Open Telemetry ecosystem. At the top of the **[readme](https:/open-telemetry/opentelemetry-collector/blob/master/README.md)**, there are multiple links that give newcomers a good idea of what the project is about and how to get involved in it.
+* Read through the Open Telemetry Python documentation
+ * The [API](https://opentelemetry-python.readthedocs.io/en/stable/api/api.html) and [SDK](https://opentelemetry-python.readthedocs.io/en/stable/sdk/sdk.html) documentation provides a lot of information on what the classes and their functions are used for. Since there is currently minimal documentation for C++, use the Python repository’s extensive documentation to learn more about how the API and SDK work.
+
+### Code Examples
+
+* Follow the [simple trace example](https:/open-telemetry/opentelemetry-cpp/pull/92) for an introduction to basic Open Telemetry functionality in C++. Currently the example can be found in [PR #94](https:/open-telemetry/opentelemetry-cpp/pull/94)
+
+* Read through the [Java Quick-Start Guide](https:/open-telemetry/opentelemetry-java/blob/master/QUICKSTART.md)
+ * This shows you how the classes and functions will interact in simple and easy to digest examples.
+* Take a look at this [Java SDK example.](https:/open-telemetry/opentelemetry-java/tree/master/examples/sdk-usage) This shows a good use case of the SDK using stdout exporter.
+* Take a look at the [Java Jaeger example.](https:/open-telemetry/opentelemetry-java/tree/master/examples/jaeger) This provides a brief introduction to the Jaeger exporter, its interface, and how to interact with the service.
+
+Please contribute! You’re welcome to add more information if you come across any helpful resources.