diff --git a/envy/_subsections/sec01/lesson-08.org b/envy/_subsections/sec01/lesson-08.org
index c39275a..c68e3e6 100644
--- a/envy/_subsections/sec01/lesson-08.org
+++ b/envy/_subsections/sec01/lesson-08.org
@@ -4,6 +4,7 @@
 * Links
 - [[../../toc.org][TOC - Facebook Marketing Notes]]
 - [[https://www.udemy.com/course/facebook-ads-facebook-marketing-mastery-guide/learn/lecture/34808870#overview][S02:L08 - The Ultimate Facebook Page Guide]]
+- [[https://www.coursenvy.com/post/social-media-image-sizes][Optimal Social Media Image Sizes]]
 
 * Notes
 ** Create a Facebook Page
@@ -101,4 +102,153 @@
    - See also: [[*create a business account on instagram][How to create a business account on Instagram]]
 
 ** Facebook Images
-[[https://www.coursenvy.com/post/social-media-image-sizes][Optimal Image Sizes]]
+- [[https://www.coursenvy.com/post/social-media-image-sizes][Optimal Social Media Image Sizes]]
+- [[https://www.canva.com/sizes/social-media/][Canva - Design size guide]]
+- [[https://www.coursenvy.com/post/facebook-image-sizes][Courseenvy - Facebook Image Sizes]]
+- [[https://www.social-contests.com/check-image/][Facebook Grid Image Checker Tool]]
+
+https://www.canva.com/sizes/facebook/
+
+| Graphic                    | Size             |
+|----------------------------+------------------|
+| Profile Picture            | 400 × 400 px     |
+| Cover Photo                | 1,125 × 633 px   |
+| Image Post                 | 1,200 × 630 px   |
+| Shared Link Images         | 1,200 × 630 px   |
+| Tab Images                 | 113 × 74 px      |
+| Event Image                | 1,920 × 1,005 px |
+| Facebook Ad (Carousel)     | 1,080 × 1,080 px |
+| Facebook Ad (Single Image) | 1,200 × 628 px   |
+
+*** notes
+- assume every image online is copyright
+  - take your own photos
+  - use Canva
+
+- profiles display
+  - computer 180x180
+  - mobile 128x128
+
+- cover display
+  - computer 820x312
+  - mobile 640x360
+
+- event covers
+  - landscape
+  - min 1200x628
+
+- image posts
+  - square or 3:2 aspect
+  - automatic scale to thumbnail
+
+*** facebook ads
+- single images or carousel
+  - 1.91:1 ratio
+  - 1200x628
+
+- too much text can dsiqualify ad
+
+** Youtube
+https://www.canva.com/sizes/youtube/
+
+| Type                      | Size             |
+|---------------------------+------------------|
+| YouTube Thumbnail         | 1,280 × 720 px   |
+| YouTube Banner            | 2,560 × 1,440 px |
+| YouTube Video (4K)        | 3,840 × 2,160 px |
+| YouTube Profile Picture   | 800 × 800 px     |
+| Banner in Desktop Display | 2,560 × 423 px   |
+| Banner in Tablet Display  | 1,855 × 423 px   |
+| Banner in Mobile Display  | 1,546 × 423 px   |
+| Banner in TV Display      | 2,560 × 1,440 px |
+
+*** thumbnail
+- 1280x720
+- 2mb limit
+- 16:9
+- JPG, GIF, PNG
+- minimum 640 wide
+- should be as large as possible
+
+*** channel banner
+- ideal banner size 2560x1440
+- 6mb limit
+- minimum 2048x1152
+- 16:9 aspect
+- JPG, PNG, GIF, BMP
+- best size 2560x1440
+
+*** video
+- minimum: 426x240
+- maximum: 3840x2160
+- 16:9 aspect ratio
+- maximum files size
+  - 12 hours
+  - 256gb
+
+*** profile
+- circular
+- 800x800
+- JPG, PNG, GIF, BMP
+- 2mb
+
+** Instagram
+https://www.canva.com/sizes/instagram/
+
+| Graphic        | Size          |
+|----------------+---------------|
+| Profile Photo  | 110 × 110 px  |
+| Square Images  | 1,080 × 1,080 px |
+| Images         | 1,080 × 1,350 px |
+| Stories        | 1,080 × 1,920 px |
+
+*** profile
+- square sized
+- 160x160
+- minimum 110x110
+
+*** square images
+- 1080x1080
+
+*** landscape
+- 1080 wide
+- best viewed at: 1080x566
+
+*** portrait
+- 1080x1350
+
+*** stories
+- expire after 24 hours
+- 1080x1920
+- aspect 9:16
+
+** Instagram (cont)
+*** images
+- landscape ad
+  - 1200 x 628
+  - aspect ration 1.9:1
+
+- square ads
+  - 1080 x 1080
+  - 1:1
+
+- vertical ads
+  - 600 x 750
+  - 4:5
+
+*** video
+- 4gb max
+- min resolution 1080x1080
+- feed videos max 60 min
+- aspect ratio
+  - landscape 1.91:1
+  - vertical 9:16
+    - 4:5 (crop if too tall)
+
+- caption
+  - max 63,000 characters
+  - drop down if tapped
+
+- url
+  - avoid using
+  - not clickable