R basics 
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 YouTube: how to download and install R (6m39s) [for windows)
    https://www.youtube.com/watch?v=ZoPJGmpYJzw

 YouTube: Programming in R - Getting Started - Installing R and RStudio on a Mac (5m59s)
    https://www.youtube.com/watch?v=Ywj6yNfc5nM

 Yan, Yuxing, 2022, DANL100 Chapter 2:Writing simple functions 
      https://youtu.be/uHNgza5QULc
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ChatGPT: write,  debug code
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 AO,Laejandro,2023, Langchain GUI App | Create a ChatGPT For Your PDF in Python
     https://www.youtube.com/watch?v=wUAUdEw5oxM

 AO,Laejandro,2023,LangChain Memory Tutorial | Building a ChatGPT Clone in Python
     https://www.youtube.com/watch?v=Cwq91cj2Pnc

 Ottley,Liam, 2023, Create Your Own ChatGPT with PDF Data in 5 Minutes (LangChain Tutorial)
     https://www.youtube.com/watch?v=au2WVVGUvc8

 AO,Laejandro,2023,Chat with a CSV | LangChain Agents Tutorial (Beginners)
     https://www.youtube.com/watch?v=tjeti5vXWOU

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Value assignment/functions
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 Boone,Ed,2010, Introduction to Functions in R
    (v35k,s5.7k,t6:29)
    https://www.youtube.com/watch?v=gl9opYcRxO8

 LearnR, 2014,  R Tutorial 35: Writing functions
    (v24k,s28k,t4:44)
    https://www.youtube.com/watch?v=-CTXR8qxTUI
 
 Tutorials Point (India) Pvt. Ltd., 2018, R programming -Functions
    (v5k,s980k,t3:00)
    https://www.youtube.com/watch?v=Vl9gSqi71Cs
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Python loops, cond, and graphs
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  R Programming||Connecting google spreadsheet with R - R Programming (9m33s)
     https://www.youtube.com/watch?v=7l2_R61jrUU
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Data manipulation
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  DANL100, Chapter 17: A true date variable, Data Frame (I), data output, 
           generate ff3Monthly.pickle 
           https://youtu.be/B42AWwQPveM

  DANL100:Programming for Data Analytics
          Estimating IBM’s annual returns and annual risk by using Excel, R and Python
          https://youtu.be/ILEIGApAt1Q
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