| # Welcome |
| **Here are SkyWalking 8 official documents. You're welcome to join us.** |
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| From here you can learn all about **SkyWalking**’s architecture, how to deploy and use SkyWalking, and develop based on SkyWalking contributions guidelines. |
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| **NOTICE, SkyWalking 8 uses brand new tracing APIs, it is incompatible with all previous releases.** |
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| - [Concepts and Designs](en/concepts-and-designs/README.md). You'll find the the most important core ideas about SkyWalking. You can learn from here if you want to understand what is going on under our cool features and visualization. |
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| - [Setup](en/setup/README.md). Guides for installing SkyWalking in different scenarios. As a platform, it provides several ways of the observability. |
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| - [UI Introduction](en/ui/README.md). Introduce the UI usage and features. |
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| - [Contributing Guides](en/guides/README.md). Guides are for PMC member, committer or new contributor. Here, you can find how to start contributing. |
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| - [Protocols](en/protocols/README.md). Protocols show the communication ways between agents/probes and backend. Anyone interested in uplink telemetry data should definitely read this. |
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| - [FAQs](en/FAQ/README.md). A manifest of already known setup problems, secondary developments experiments. When you are facing a problem, check here first. |
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| In addition, you might find these links interesting: |
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| - The latest and old releases are all available at [Apache SkyWalking release page](http://skywalking.apache.org/downloads/). The change logs are [here](../CHANGES.md). |
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| - [SkyWalking WIKI](https://cwiki.apache.org/confluence/display/SKYWALKING/Home) hosts the context of some changes and events. |
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| - Up-to-date overview of SkyWalking module [call flow](https://sourcespy.com/github/skywalking/xx-omcalls-.html) and [hierarchy](https://sourcespy.com/github/skywalking/xx-omhierarchy-.html) including ability to analize each module individually. |
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| - You can find the speaking schedules at Conf, online videos and articles about SkyWalking in [Community resource catalog](https://github.com/OpenSkywalking/Community). |
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| We're always looking for help improving our documentation and codes, so please don’t hesitate to [file an issue](https://github.com/apache/skywalking/issues/new) |
| if you see any problem. |
| Or better yet, submit your own contributions through pull request to help make them better. |
