diff --git a/README.md b/README.md
index 999cbf1..66433d5 100644
--- a/README.md
+++ b/README.md
@@ -3,19 +3,54 @@
 
 <!-- WARNING: THIS FILE WAS AUTOGENERATED! DO NOT EDIT! -->
 
-The IAEA [Marine Radioactivity Information System
-(**MARIS**)](https://maris.iaea.org) allows free access to users to
-search and download the results of measurements of radioactivity in
-seawater, biota, sediment and suspended matter. MARIS is maintained and
-developed by the [IAEA Environmental
+The [IAEA Marine Radioactivity Information System
+(MARIS)](https://maris.iaea.org) provides open access to radioactivity
+measurements in marine environments. Developed by the [IAEA
+Environmental
 Laboratories](https://www.iaea.org/about/organizational-structure/department-of-nuclear-sciences-and-applications/division-of-iaea-environment-laboratories)
-in Monaco.
+in Monaco, MARIS offers data on seawater, biota, sediment, and suspended
+matter.
 
-The current Python package offers command-line utilities for encoding
-MARIS harvested datasets into
-[`NetCDF`](https://www.unidata.ucar.edu/software/netcdf/) or `.csv`
-formats. This allows to convert **MARIS data into a format that is
-compatible with a wide range of scientific and data analysis tools**.
+This Python package includes command-line tools to convert MARIS
+datasets into [`NetCDF`](https://www.unidata.ucar.edu/software/netcdf/)
+or `.csv` formats, enhancing compatibility with various scientific and
+data analysis software.
+
+## Core Concept: Handlers
+
+`marisco` is built around the concept of `handlers` - specialized
+modules designed to convert MARIS datasets into NetCDF format. Each
+handler is tailored to a specific data provider and implemented as a
+dedicated Jupyter notebook.
+
+### Literate Programming Approach
+
+We’ve adopted a Literate Programming approach, which means:
+
+1.  **Documentation**: Each handler serves as comprehensive
+    documentation.
+2.  **Code Reference**: The notebooks contain the actual implementation
+    code.
+3.  **Communication Tool**: They facilitate discussions with data
+    providers about discrepancies or inconsistencies.
+
+### Powered by nbdev
+
+To achieve this, we leverage
+[nbdev](https://nbdev.readthedocs.io/en/latest/), a powerful tool that
+allows us to:
+
+1.  Write code within Jupyter notebooks
+2.  Automatically export relevant parts as dedicated Python modules
+
+This approach bridges the gap between documentation and implementation,
+ensuring they remain in sync.
+
+### See It in Action
+
+For a concrete example of this approach, check out our [HELCOM dataset
+handler
+implementation](https://github.com/franckalbinet/marisco/blob/main/nbs/api/handlers/helcom.ipynb).
 
 ## Install
 
diff --git a/nbs/api/nc_template.ipynb b/nbs/api/nc_template.ipynb
index ecc90dd..1561853 100644
--- a/nbs/api/nc_template.ipynb
+++ b/nbs/api/nc_template.ipynb
@@ -284,6 +284,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "#| eval: false\n",
     "# Example of suffix defined in the .cdl file\n",
     "suffix = {\n",
     "    'name': '_unc',\n",
diff --git a/nbs/api/serializers.ipynb b/nbs/api/serializers.ipynb
index 8122657..fb8d21f 100644
--- a/nbs/api/serializers.ipynb
+++ b/nbs/api/serializers.ipynb
@@ -36,6 +36,7 @@
     }
    ],
    "source": [
+    "#| hide\n",
     "%load_ext autoreload\n",
     "%autoreload 2"
    ]
@@ -59,14 +60,6 @@
     "import os"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "id": "c7952355-3118-4362-86d4-c0331b5ef4e1",
-   "metadata": {},
-   "source": [
-    "## NetCDF encoder"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,
diff --git a/nbs/api/utils.ipynb b/nbs/api/utils.ipynb
index aada9d8..81447a9 100644
--- a/nbs/api/utils.ipynb
+++ b/nbs/api/utils.ipynb
@@ -54,7 +54,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "#| eval: false\n",
+    "#| hide\n",
     "import pandas as pd"
    ]
   },
diff --git a/nbs/index.ipynb b/nbs/index.ipynb
index 428fb2c..f013523 100644
--- a/nbs/index.ipynb
+++ b/nbs/index.ipynb
@@ -15,10 +15,39 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The IAEA [Marine Radioactivity Information System (**MARIS**)](https://maris.iaea.org) allows free access to users to search and download the results of measurements of radioactivity in seawater, biota, sediment and suspended matter. MARIS is maintained and developed by the [IAEA Environmental Laboratories](https://www.iaea.org/about/organizational-structure/department-of-nuclear-sciences-and-applications/division-of-iaea-environment-laboratories) in Monaco.\n",
+    "The [IAEA Marine Radioactivity Information System (MARIS)](https://maris.iaea.org) provides open access to radioactivity measurements in marine environments. Developed by the [IAEA Environmental Laboratories](https://www.iaea.org/about/organizational-structure/department-of-nuclear-sciences-and-applications/division-of-iaea-environment-laboratories) in Monaco, MARIS offers data on seawater, biota, sediment, and suspended matter.\n",
     "\n",
+    "This Python package includes command-line tools to convert MARIS datasets into [`NetCDF`](https://www.unidata.ucar.edu/software/netcdf/) or `.csv` formats, enhancing compatibility with various scientific and data analysis software."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Core Concept: Handlers\n",
+    "\n",
+    "`marisco` is built around the concept of `handlers` - specialized modules designed to convert MARIS datasets into NetCDF format. Each handler is tailored to a specific data provider and implemented as a dedicated Jupyter notebook.\n",
+    "\n",
+    "### Literate Programming Approach\n",
+    "\n",
+    "We've adopted a Literate Programming approach, which means:\n",
+    "\n",
+    "1. **Documentation**: Each handler serves as comprehensive documentation.\n",
+    "2. **Code Reference**: The notebooks contain the actual implementation code.\n",
+    "3. **Communication Tool**: They facilitate discussions with data providers about discrepancies or inconsistencies.\n",
+    "\n",
+    "### Powered by nbdev\n",
+    "\n",
+    "To achieve this, we leverage [nbdev](https://nbdev.readthedocs.io/en/latest/), a powerful tool that allows us to:\n",
+    "\n",
+    "1. Write code within Jupyter notebooks\n",
+    "2. Automatically export relevant parts as dedicated Python modules\n",
+    "\n",
+    "This approach bridges the gap between documentation and implementation, ensuring they remain in sync.\n",
+    "\n",
+    "### See It in Action\n",
     "\n",
-    "The current Python package offers command-line utilities for encoding MARIS harvested datasets into [`NetCDF`](https://www.unidata.ucar.edu/software/netcdf/) or `.csv` formats. This allows to convert **MARIS data into a format that is compatible with a wide range of scientific and data analysis tools**."
+    "For a concrete example of this approach, check out our [HELCOM dataset handler implementation](https://github.com/franckalbinet/marisco/blob/main/nbs/api/handlers/helcom.ipynb)."
    ]
   },
   {