diff --git a/docs/tutorial/viz.md b/docs/tutorial/viz.md
index eea733fbcf..0bf6079920 100644
--- a/docs/tutorial/viz.md
+++ b/docs/tutorial/viz.md
@@ -94,7 +94,7 @@ SELECT ST_Point(cast(pointtable._c0 as Decimal(24,20)),cast(pointtable._c1 as De
 FROM pointtable
 ```
 
-As you know, Sedona provides many different methods to load various spatial data formats. Please read [Write an Spatial DataFrame application](../sql).
+As you know, Sedona provides many different methods to load various spatial data formats. Please read [Write a Spatial DataFrame application](../sql).
 
 ## Generate a single image
 
@@ -169,7 +169,7 @@ SELECT ST_Render(pixel, color) AS image, (SELECT ST_AsText(bound) FROM boundtabl
 FROM pixelaggregates
 ```
 
-This DataFrame will contain a Image type column which has only one image.
+This DataFrame will contain an Image type column which has only one image.
 
 ### Store the image on disk
 
diff --git a/docs/tutorial/zeppelin.md b/docs/tutorial/zeppelin.md
index 3c8fd203a0..c78d71501f 100644
--- a/docs/tutorial/zeppelin.md
+++ b/docs/tutorial/zeppelin.md
@@ -1,4 +1,4 @@
-Sedona provides a Helium visualization plugin tailored for [Apache Zeppelin](). This finally bridges the gap between Sedona and Zeppelin.  Please read [Install Sedona-Zeppelin](../../setup/zeppelin/) to learn how to install this plugin in Zeppelin.
+Sedona provides a Helium visualization plugin tailored for [Apache Zeppelin](https://zeppelin.apache.org/). This finally bridges the gap between Sedona and Zeppelin.  Please read [Install Sedona-Zeppelin](../../setup/zeppelin/) to learn how to install this plugin in Zeppelin.
 
 Sedona-Zeppelin equips two approaches to visualize spatial data in Zeppelin. The first approach uses Zeppelin to plot all spatial objects on the map. The second one leverages SedonaViz to generate map images and overlay them on maps.