diff --git a/README.md b/README.md
index e69de29..1527180 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,47 @@
+# testium training slides
+
+Beamer presentation (LuaLaTeX) for the testium training.
+
+## Compilation
+
+Requires LuaLaTeX with the `minted` package (which requires Python and `pygments`).
+
+```sh
+make
+```
+
+The output PDF is generated in `build/`.
+
+To clean the build directory:
+
+```sh
+make clean
+```
+
+## Document architecture
+
+```
+src/
+├── main.tex              # Entry point — includes all sections
+├── preamble.tex          # Packages, theme, colors, macros
+├── images/
+│   └── logo.png
+└── sections/
+    ├── title.tex         # Title page
+    ├── summary.tex       # Table of contents
+    ├── intro.tex         # Introduction: features, input files, CLI, variables, inline eval, links
+    ├── installation.tex  # Installation from binary or sources
+    ├── items.tex         # Test items reference (console, py_func, loop, check, etc.)
+    ├── functionalities.tex  # Advanced features: result processing, includes, templating, reports
+    ├── tips.tex          # Tips and tricks
+    └── conclusion.tex    # Thank you + contact
+```
+
+### Macros
+
+| Macro | Usage |
+|---|---|
+| `\incode{text}` | Inline code (bold blue monospace) |
+| `\tum{text}` | testium name highlight (bold orange italic) |
+| `\pass{text}` | PASS result (bold green monospace) |
+| `\fail{text}` | FAIL result (bold red monospace) |
diff --git a/src/sections/functionalities.tex b/src/sections/functionalities.tex
index d0a0a38..9bfb80f 100644
--- a/src/sections/functionalities.tex
+++ b/src/sections/functionalities.tex
@@ -26,9 +26,30 @@
 \end{frame}
 
 \begin{frame}[fragile]{Result processing example}
+\begin{columns}
+  \column{0.5\textwidth}
     \begin{minted}[fontsize=\fontsize{6}{7}\selectfont]{yaml}
-- TBD:
+- py_func:
+    name: Get device status
+    file: device.py
+    func_name: get_status
+    process_result: <|$(result)['temperature']|>
+    expected_result: 25.0
     \end{minted}
+  \column{0.5\textwidth}
+    \begin{minted}[fontsize=\fontsize{6}{7}\selectfont]{yaml}
+- console:
+    name: Read firmware version
+    console_name: serial_console
+    steps:
+      - writeln: version
+      - read_until:
+          expected: "version:"
+          timeout: 5
+    process_result: <|$(result).split()[-1]|>
+    expected_result: "1.2.3"
+    \end{minted}
+\end{columns}
 \end{frame}
 
 \begin{frame}[fragile]{Includes}
diff --git a/src/sections/intro.tex b/src/sections/intro.tex
index ab5633b..faf1b30 100644
--- a/src/sections/intro.tex
+++ b/src/sections/intro.tex
@@ -270,7 +270,7 @@ report:
   \end{itemize}
 \end{frame}
 
-% ===== Links for documentation / code =====evaluation and
+% ===== Links for documentation / code =====
 \subsection{Documentation and example code}
 
 \begin{frame}{Links for documentation and example code}
diff --git a/src/sections/items.tex b/src/sections/items.tex
index 8cfb9ad..091e274 100644
--- a/src/sections/items.tex
+++ b/src/sections/items.tex
@@ -93,8 +93,10 @@
     \end{itemize}
     \item \incode{loop} test item specific variables
     \begin{itemize}
-      \item \incode{loop\_index}   : loop index (starting from 0)
-      \item \incode{loop\_param}   : current value of the loop iterator
+      \item \incode{loop\_index}         : loop index (starting from 0)
+      \item \incode{loop\_index\_inverse} : loop index in reverse order
+      \item \incode{loop\_count}         : total number of iterations
+      \item \incode{loop\_param}         : current value of the loop iterator
     \end{itemize}
   \end{itemize}
 \end{frame}
@@ -187,9 +189,16 @@ def dummy_func(param1, param2, param4, param4):
 
 \begin{frame}[fragile]{\incode{lua\_func} test item function call}
   \begin{itemize}
-    \item Calls the a lua function from a module
+    \item The lua file must import helper's module \incode{testium}
+    \item Calls a Lua function by its name
     \begin{minted}[fontsize=\fontsize{6}{7}\selectfont]{lua}
 tm = require("testium")
+
+function dummy_func(param1, param2)
+    local value = tm.gd("global_dict_key")
+    ...
+    return 10
+end
     \end{minted}
     \begin{itemize}
       \item To get a variable from the global dictionnary : \incode{tm.gd("global\_dict\_key")}
diff --git a/testium_training.pdf b/testium_training.pdf
index 421420c..186ed60 100644
Binary files a/testium_training.pdf and b/testium_training.pdf differ