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diff --git a/img/your_first_script.png b/img/your_first_script.png
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diff --git a/index.qmd b/index.qmd
index bf9dc70..06d0966 100644
--- a/index.qmd
+++ b/index.qmd
@@ -140,6 +140,10 @@ Packages for everything!
 
 :::
 
+# Interactive Python
+
+{{< include slides/interactive_python.qmd >}}
+
 # Basics of Python
 
 {{< include slides/basics.qmd >}}
@@ -164,9 +168,9 @@ Packages for everything!
 
 {{< include slides/errors_and_exceptions.qmd >}}
 
-# How to work with Python?
+# IDEs
 
-{{< include slides/working_with_python.qmd >}}
+{{< include slides/IDEs.qmd >}}
 
 # Virtual environments
 
@@ -185,7 +189,9 @@ Packages for everything!
 {{< include slides/documenting_your_code.qmd >}}
 
 # Next steps
-## Next steps {.smaller .incremental}
+## Next steps {.smaller}
+
+::: {.incremental}
 * We've covered some of the basics
 * Next steps -- Practice!:
   + Mess around with code
@@ -195,15 +201,20 @@ Packages for everything!
   + Additional courses
 :::
 
-## Further resources {.smaller .incremental}
+## Further resources {.smaller}
+
+::: {.incremental}
 * [CS50](https://pll.harvard.edu/course/cs50-introduction-computer-science)
 * UCL ARC courses
   + [An introduction to programming for research using Python](https://rits.github-pages.ucl.ac.uk/doctoral-programming-intro/)
   + [Research software engineering with Python](https://github-pages.ucl.ac.uk/rsd-engineeringcourse/)
   + [Software carpentry courses](https://software-carpentry.org/lessons/)
   + [Exercism](https://exercism.org/tracks/python)
+:::
 
-## Troubleshooting tips {.smaller .incremental}
+## Troubleshooting tips {.smaller}
+
+::: {.incremental}
 * Make sure the correct environment is activated
   + `which python` or `which pip` to check
 * Check the scope of your variable
@@ -213,6 +224,7 @@ Packages for everything!
   + `pyproject.toml` → more on this in future sessions!
 * Look out for deep vs shallow copies
   + Especially with collections (lists, dicts, sets)
+:::
 
 ## Question
 ::::: {.columns}
@@ -236,11 +248,13 @@ print(a[0])
 :::::
 
 
-## Troubleshooting tips {.smaller .incremental}
+## Troubleshooting tips {.smaller}
+
+::: {.incremental}
 * Read the error messages!
   + Google is your friend
   + LLMs can help too
   + Ask a colleague or contact us
 * Use a debugger (e.g. `pdb`, or IDE built-in debuggers)
 * Write tests for your code (e.g. using `pytest`)
-
+:::
diff --git a/slides/working_with_python.qmd b/slides/IDEs.qmd
similarity index 76%
rename from slides/working_with_python.qmd
rename to slides/IDEs.qmd
index 2f7e16e..7baff47 100644
--- a/slides/working_with_python.qmd
+++ b/slides/IDEs.qmd
@@ -1,17 +1,3 @@
-## Ways of working with Python {.incremental}
-
-::: {.incremental}
-* `REPL` (Read-Eval-Print Loop), "interactive Python", "Python console"
-* `Jupyter notebooks` (.ipynb)
-* `Scripts` (.py)
-:::
-
-::: {.fragment .fade-in}
-Demo time! 🧑🏻‍💻👩🏻‍💻
-:::
-
-
-
 ## IDEs: Integrated Development Environments {.smaller}
 
 ::: {.incremental}
diff --git a/slides/first_script.qmd b/slides/first_script.qmd
index 681423f..c99fc28 100644
--- a/slides/first_script.qmd
+++ b/slides/first_script.qmd
@@ -1,2 +1,23 @@
+## Ways of working with Python {.incremental}
+
+::: {.incremental}
+* `REPL` (Read-Eval-Print Loop), "interactive Python", "Python console"
+* `Jupyter notebooks` (.ipynb)
+* `Scripts` (.py)
+:::
+
+::: {.fragment .fade-in}
+Demo time! 🧑🏻‍💻👩🏻‍💻
+:::
+
+
+
 ## Writing your first Python script
-* Placeholder slide
\ No newline at end of file
+
+::: {.fragment .fade-in}
+Demo time! 🧑🏻‍💻👩🏻‍💻
+:::
+
+::: {.fragment .fade-in}
+![](/img/your_first_script.png){width=70%}
+:::
\ No newline at end of file
diff --git a/slides/functions.qmd b/slides/functions.qmd
index 5dffdd1..626dc57 100644
--- a/slides/functions.qmd
+++ b/slides/functions.qmd
@@ -233,7 +233,6 @@ print(longer_string("apple"))
 
 ::: {.incremental .smaller}
 * `*` and `**` are upacking operators, useful to unpack tuples, lists and dictionaries
-* I't common to use `*` and `**` when calling functions
 * You might have seen the syntax `*args` and `**kwargs` before
 * This is just a convention to indicate that the function takes a variable number of arguments
 :::
@@ -291,7 +290,7 @@ my_func(name="Jane")
 ::: {.incremental .smaller}
 * Functions can return one or more values
 * Use the `return` keyword
-* A function can only return once
+* A function can have multiple return statements but only one will be executed
 * If no return statement is given, the function returns `None`
 :::
 
diff --git a/slides/interactive_python.qmd b/slides/interactive_python.qmd
new file mode 100644
index 0000000..9c143f6
--- /dev/null
+++ b/slides/interactive_python.qmd
@@ -0,0 +1,20 @@
+## Ways of working with Python {.incremental}
+
+::: {.incremental}
+* `REPL` (Read-Eval-Print Loop), "interactive Python", "Python console"
+* `Jupyter notebooks` (.ipynb)
+* `Scripts` (.py)
+:::
+
+
+
+## Using interactive Python (REPL)
+
+::: {.fragment .fade-in}
+Demo time! 🧑🏻‍💻👩🏻‍💻
+:::
+
+::: {.fragment .fade-in}
+![](/img/interactive_python.png){width=80%}
+:::
+