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diff --git a/_share/media/img/compsci/ai/herk/build_8hr/ch01_e02c.png b/_share/media/img/compsci/ai/herk/build_8hr/ch01_e02c.png
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diff --git a/build n8n ai agents - 8 hr course/_subsections/lesson-01.org b/build n8n ai agents - 8 hr course/_subsections/lesson-01.org
old mode 100644
new mode 100755
index 5a6f926..bdca58f
--- a/build n8n ai agents - 8 hr course/_subsections/lesson-01.org
+++ b/build n8n ai agents - 8 hr course/_subsections/lesson-01.org
@@ -14,8 +14,9 @@
:END:
#+attr_html: :class playlist
-- [[https://www.youtube.com/watch?v=Ey18PDiaAYI][0:00:00 Course Agenda]]
+- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=0s][0:00:00 Course Agenda]]
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=103s][0:01:43 AI Agents Simplified]]
+- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=542s][0:09:02 The Industry Opportunity]]
* Notes
** course agenda
diff --git a/build n8n ai agents - 8 hr course/_subsections/lesson-02.org b/build n8n ai agents - 8 hr course/_subsections/lesson-02.org
old mode 100644
new mode 100755
index d32f895..52107db
--- a/build n8n ai agents - 8 hr course/_subsections/lesson-02.org
+++ b/build n8n ai agents - 8 hr course/_subsections/lesson-02.org
@@ -16,4 +16,84 @@
#+attr_html: :class playlist
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=725s][0:12:05 n8n Foundations (workflows, variables, JSON)]]
+- https://youtu.be/Ey18PDiaAYI?si=5IUu_5Sd-tfTzmMV&t=1276 *current*
+
* Notes
+- n8n lets you automate anything
+
+** templates
+- n8n
+- nate herk
+
+** credentials
+- in order to use any api you usually need some kind of credentials
+
+** workflow
+*** node structure
+- every node has three main parts
+ - input
+ - configuration
+ - credentials
+ - output
+
+*** adding new credentials
+
+**** open ai
+- go to Dashboard
+- select API keys
+
+
+- key:
+ ~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~
+
+**** add the api key
+- in n8n
+- go to the tool (message a model)
+- go to "credential to connect with"
+- select "create new credential"
+- enter the API key
+- in the upper left hand corner where it says "Open AI" you can rename that to whatever you want, ie the api key name
+
+**** change the Model used
+- go to 'from list' in the Model section
+- pick GPT-4.1-MINI
+
+*** test it
+- add something to prompt
+ ~tell me a joke~
+- click execute and see the results
+
+*** output panel has 3 options
+- schema
+- table
+- json
+
+*** connect the output with another tool
+**** get the set Edit field
+- click on the + button
+- in the search bar, enter 'set' and pick the Edit Fields node
+
+**** modify the node
+- click 'Fields to Set'
+- type in a name for the variable
+- from the Input panel drag the paprt you want to 'value'
+
+** trigger types
+- manual trigger
+- chat trigger
+
+*** using chat trigger
+- go to 'message a model' node
+- delete whatever is in the prompt field
+- drag chatInput to the prompt field
+
+** templates
+*** n8n company
+- http://n8n.com
+- go to Product->Templates
+- choose tiktok clone template
+
+*** set up telegram account
+- API Key :: ~7944661605:AAFko2fVauPj_iNALgNf-WDr9wUrVEGDTzs~
+- bot username :: ~on_tutorial_nate_clone_bot~
+- bot name :: ~n8n-herk-tutorial-tiktok-clone~
diff --git a/build n8n ai agents - 8 hr course/_subsections/lesson-03.org b/build n8n ai agents - 8 hr course/_subsections/lesson-03.org
new file mode 100644
index 0000000..07c541c
--- /dev/null
+++ b/build n8n ai agents - 8 hr course/_subsections/lesson-03.org
@@ -0,0 +1,19 @@
+#+title: Lesson 03 | data types
+#+HTML_HEAD:
+#+HTML_HEAD:
+#+HTML_HEAD:
+
+* Links
+#+attr_html: :class links
+- [[../toc.org][TOC | Build n8n ai agents 8 hr course]]
+- [[https://www.youtube.com/watch?v=Ey18PDiaAYI][Course Video]]
+
+*** timestamps
+:PROPERTIES:
+:CUSTOM_ID: timestamp
+:END:
+
+#+attr_html: :class playlist
+- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=2445s][0:40:45 n8n n8n Data Types]]
+
+* Notes
diff --git a/build n8n ai agents - 8 hr course/toc.org b/build n8n ai agents - 8 hr course/toc.org
old mode 100644
new mode 100755
index d478dea..4e2ad95
--- a/build n8n ai agents - 8 hr course/toc.org
+++ b/build n8n ai agents - 8 hr course/toc.org
@@ -10,7 +10,7 @@
- [[https://www.youtube.com/@nateherk][Nate Herk Channel]]
- [[https://www.youtube.com/@nateherk/playlists][Playlists]]
-Curr: https://youtu.be/Ey18PDiaAYI?si=wXRoyj8JxgBZT92i&t=546
+Curr: https://youtu.be/Ey18PDiaAYI?si=EYpBQh_b-Xf9FB6i&t=2445
*** playlist
:PROPERTIES:
@@ -20,9 +20,9 @@ Curr: https://youtu.be/Ey18PDiaAYI?si=wXRoyj8JxgBZT92i&t=546
#+attr_html: :class playlist
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI][0:00:00 Course Agenda]]
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=103s][0:01:43 AI Agents Simplified]]
-- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=542s][0:09:02 The Industry Opportunity]] *current*
+- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=542s][0:09:02 The Industry Opportunity]]
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=725s][0:12:05 n8n Foundations (workflows, variables, JSON)]]
-- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=2445s][0:40:45 n8n n8n Data Types]]
+- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=2445s][0:40:45 n8n n8n Data Types]] *current*
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=2905s][0:48:25 23 Workflow Templates FREE]]
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=2949s][0:49:09 Step by Step AI Workflows]]
- [[https://www.youtube.com/watch?v=Ey18PDiaAYI&t=3085s][0:51:25 1) Rag Pipeline and Chatbot]]
@@ -57,3 +57,4 @@ Curr: https://youtu.be/Ey18PDiaAYI?si=wXRoyj8JxgBZT92i&t=546
#+attr_html: :class contents-overview
- [[./_subsections/lesson-01.org][Lesson 01 | Course Agenda, what is an agent]]
- [[./_subsections/lesson-02.org][Lesson 02 | foundations]]
+- [[./_subsections/lesson-03.org][Lesson 03 | data types]]