diff --git a/dhsi/SUMMARY.md b/dhsi/SUMMARY.md
index f38424a4..f8a4b1a1 100644
--- a/dhsi/SUMMARY.md
+++ b/dhsi/SUMMARY.md
@@ -2,8 +2,9 @@
 
 1. Introductions
 1. Week Overview (Jeff)
-2. What is IIIF and Why (Niqui)
-3. The Image API (Jeff)
+2. [What is IIIF (Niqui)](day-one/whatisiiif.md)
+3. [Why use IIIF (Niqui)](day-one/whyiiif.md)
+4. The Image API (Jeff)
    1. Exercise
 
 ## Monday, Session 2: 1:00pm-2:15pm
diff --git a/dhsi/day-one/whatisiiif.md b/dhsi/day-one/whatisiiif.md
index 62147e34..4fce8559 100644
--- a/dhsi/day-one/whatisiiif.md
+++ b/dhsi/day-one/whatisiiif.md
@@ -35,7 +35,7 @@ For a fuller list of institutions who advertise their IIIF resources please see
 
 ## Image*
 
-First and foremost IIIF started with the problem of making large images available on the Web. This means allowing users to zoom into large images in way that is scaleable and allows quick zooming on large images.
+First and foremost IIIF started with the problem of making large images available on the Web. This means allowing users to zoom into large images in way that is scaleable and allows quick zooming without visual lag on large images.
 
 One of the examples of this is with the Japanese Tax Map below. In the image Wayne Vanderkuil, the Stanford lead photographer is shown next to the map for a sense of scale. Wayne is 6' 4" (1.93m) tall. The map is so big that it had to be photographed in separate sections and stitched together using Photoshop. If you click on the image below you will be taken to the IIIF image which allows you to zoom around this massive map.
 
@@ -68,7 +68,7 @@ First because IIIF provides a standard way of exposing images and metadata it is
  * [Annona](https://ncsu-libraries.github.io/annona/tools/#/display?url=https://damsssl.llgc.org.uk/iiif/2.0/4574752/manifest.json&viewtype=iiif-storyboard&settings=%7B%22fullpage%22%3Atrue%7D)
  * [Clover](https://samvera-labs.github.io/clover-iiif/docs/viewer/demo?iiif-content=https://damsssl.llgc.org.uk/iiif/2.0/4574752/manifest.json)
 
-For instructions on how to take content from one viewer to another there is this [medium post](https://iiif-io.medium.com/how-to-use-iiif-resources-and-image-viewers-bd378a68b013). 
+For instructions on how to take content from one viewer to another there is this [medium post](https://iiif-io.medium.com/how-to-use-iiif-resources-and-image-viewers-bd378a68b013). We will also be covering this in the workshop.
 
 ### Interoperable Images
 
diff --git a/dhsi/day-one/whyiiif.md b/dhsi/day-one/whyiiif.md
new file mode 100644
index 00000000..93a73d51
--- /dev/null
+++ b/dhsi/day-one/whyiiif.md
@@ -0,0 +1,15 @@
+# Why use IIIF?
+
+## Interoperability
+- Interoperability provides the ability to mix and match tools
+- Allows developers to create open tools not wedded to closed standards
+- Excel vs. CSV
+
+## Storage implications 
+- No longer have to create small, medium, large derivatives
+
+## High quality images
+- Allows for zooming with high quality images without lag time
+
+## Reusable
+- Format of IIIF apis allow easy sharing, embedding 
\ No newline at end of file