fix description of user guide

Author: reint-fischer

docs/user_guide/index.md

@@ -1,6 +1,6 @@
 # User guide
 
-The core of our user guide is a series of Jupyter notebooks which document how to implement specific Lagrangian simulations with the flexibility of **Parcels**. Before diving into these advanced _how-to_ guides, we suggest users get started by reading the explanation of the core concepts and trying the quickstart tutorial. For a description of the specific classes and functions, check out the [API reference](../reference.md). To discover other community resources, check out our [Community](../community/index.md) page.
+The core of our user guide is a series of Jupyter notebooks which document how to implement specific Lagrangian simulations with the flexibility of **Parcels**. Before diving into these advanced _how-to_ guides (🖥️), we suggest users get started by reading the explanation (📖) of the core concepts and trying the tutorials (🎓). For a description of the specific classes and functions, check out the [API reference](../reference.md). To discover other community resources, check out our [Community](../community/index.md) page.
 
 ```{note}
 The tutorials written for Parcels v3 are currently being updated for Parcels v4. Shown below are only the notebooks which have been updated.