diff --git a/README.md b/README.md
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@@ -1,2 +1,29 @@
 # GitHubUpdater
-Sync GitHub repositories into InterSystems Cache
+Sync GitHub repositories into InterSystems Cache.
+
+Installation
+-----------
+
+1. Download Task.cls.xml and import it into Caché (any namespace, further referred to as {Namespace}).
+
+Usage
+-----------
+
+To create task for syncing  GitHub repository → Cache instance do the following:
+
+1. Go to SMP → System Operation → Task Manager → New Task
+2. Set <i>Name</i> as desired
+3. Set <i>Namespace to run task in</i> to {Namespace}
+4. Set <i>Task type</i> to GitHub Update
+5. Set <i>GitHubURL</i> to a valid GitHub repository, eg: https://github.com/intersystems-ru/Cache-MDX2JSON
+7. Set <i>Namespace</i> to a Namespace you want to download GitHub repository to
+8. Optionally provide <i>Username</i>, <i>Password</i> (for private repos or very frequent updates).
+9. Set up the <i>Branch</i> you need. Possible values are - commit/branch/tag
+8. Set other parameters as desired and finish creation of the task
+
+After task runs at least once you will get <i>GitHubURL</i> repository contents in <i>Namespace</i>
+
+Continuous Integration
+-----------
+
+If you want more functionality check out [CacheGitHubCI](https://github.com/intersystems-ru/CacheGitHubCI) project.