diff --git a/README-details.md b/README-details.md
index 174e4901..605787c1 100644
--- a/README-details.md
+++ b/README-details.md
@@ -144,9 +144,10 @@ See [Other Tools](./things-to-know.md#other-tools)
 ### Presentations
 
 - [NLP presentations](./natural-language-processing/README.md#presentations)
- - [Better NLP - presentations](./examples/better-nlp/presentations)
+  - [Better NLP - presentations](./examples/better-nlp/presentations)
 - [Data presentations](./presentations/data/)
- - [Physics functions usage example](./presentations/data/Trackener-physics-functions-usage-example.pptx)
+  - [Physics functions usage example](./presentations/data/Trackener-physics-functions-usage-example.pptx)
+  - [Graph database: Grakn (GraknCosmos 2020)](../examples/data/databases/graph/grakn/presentations/README.md) 
 
 ### Best Practices
 
diff --git a/examples/data/databases/graph/grakn/README.md b/examples/data/databases/graph/grakn/README.md
index e459ab31..73542e9f 100644
--- a/examples/data/databases/graph/grakn/README.md
+++ b/examples/data/databases/graph/grakn/README.md
@@ -107,9 +107,9 @@ See [Graql-to-English](./graql/Graql-to-English.md)
   - Friendship: [schema](https://dev.grakn.ai/docs/general/quickstart#the-schema) | [data](https://dev.grakn.ai/docs/general/quickstart#download-and-load-the-complete-schema)
   - [Explore Schemas](https://github.com/graknlabs/examples#explore-schemas) 
 - Community
-  - [Slack](https://grakn.ai/slack)
+  - [DiscordApp](https://discordapp.com/invite/graknlabs) | ~[Slack](https://grakn.ai/slack)~
   - [Discuss](https://discuss.grakn.ai/)
-  - [Video](youtube.com/c/graknlabs)
+  - [Video](https://youtube.com/c/graknlabs)
 - Cloud
   - Grakn on AWS: [Grakn Profile (AWS Marketplace)](https://aws.amazon.com/marketplace/seller-profile?id=35eaf0dd-eda4-4b8d-b78a-443f6c619104)| [Grakn KGMS(AWS Marketplace)](https://aws.amazon.com/marketplace/pp/GRAKNAI-Grakn-KGMS/B07H8RMX5X) | [Deploy Grakn on AWS](https://dev.grakn.ai/docs/cloud-deployment/aws) | [Blog](https://blog.grakn.ai/grakn-kgms-is-now-on-aws-db871ecdb425)
   - Grakn on Google: [Deploy Grakn on Google](https://dev.grakn.ai/docs/cloud-deployment/google-cloud) | [GRAKN.AI with Google Bigtable via JanusGraph](https://blog.grakn.ai/grakn-ai-with-google-bigtable-via-janusgraph-cc46fd0958df) | [Blog](https://blog.grakn.ai/grakn-ai-on-google-cloud-f18f6692670c)