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diff --git a/HowTos/SharingYourNotebooks/3-SharingNotebooks-AddFiles.ipynb b/HowTos/SharingYourNotebooks/3-SharingNotebooks-AddFiles.ipynb
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index 44011ae..0000000
--- a/HowTos/SharingYourNotebooks/3-SharingNotebooks-AddFiles.ipynb
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@@ -1,62 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "<div style=\"border:1px solid black; padding: 10px;\">\n",
-    "    <p style=\"margin-bottom: 16px;\"><strong style=\"font-size:larger;\">How to share notebooks with students?</strong></p>\n",
-    "    <p style=\"margin-bottom:0;\"><a href=\"0-SharingNotebooks-TableOfContents.ipynb\"><strong>Table of contents</strong></a></p>\n",
-    "    <ol style=\"margin-bottom:0;margin-top:0;\">\n",
-    "        <li><a href=\"1-SharingNotebooks-CreateGitRepo.ipynb\">Create a git repository on c4science</a></li>\n",
-    "        <li><a href=\"2-SharingNotebooks-ConnectGitNoto.ipynb\">Clone and intialize the repository on noto</a></li>\n",
-    "        <li><a href=\"3-SharingNotebooks-AddFiles.ipynb\">Add your files to the repository</a></li>\n",
-    "        <li><a href=\"4-SharingNotebooks-ShareURL.ipynb\">Share the repository with students on noto</a></li>\n",
-    "    </ol>\n",
-    "</div>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# 3. Add your files to your repository\n",
-    "\n",
-    "how to use the git interface:\n",
-    "* modify\n",
-    "* stage\n",
-    "* commit\n",
-    "* push\n",
-    "* pull\n"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "<div style=\"border:1px solid black; padding: 10px;text-align:center;\">\n",
-    "    <a href=\"2-SharingNotebooks-ConnectGitNoto.ipynb\">&lt;&lt;&lt; 2. Clone and initialize the repository on noto</a>\n",
-    "    &nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;\n",
-    "    3. Add your files to the repository\n",
-    "    &nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;\n",
-    "    <a href=\"4-SharingNotebooks-ShareURL.ipynb\">4. Share the repository with students on noto &gt;&gt;&gt;</a>\n",
-    "</div>"
-   ]
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Bash",
-   "language": "bash",
-   "name": "bash"
-  },
-  "language_info": {
-   "codemirror_mode": "shell",
-   "file_extension": ".sh",
-   "mimetype": "text/x-sh",
-   "name": "bash"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 4
-}
diff --git a/HowTos/SharingYourNotebooks/5-SharingNotebooks-Advanced.ipynb b/HowTos/SharingYourNotebooks/5-SharingNotebooks-Advanced.ipynb
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index 145981e..0000000
--- a/HowTos/SharingYourNotebooks/5-SharingNotebooks-Advanced.ipynb
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@@ -1,48 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "<div style=\"border:1px solid black; padding: 10px;\">\n",
-    "    <p style=\"margin-bottom: 16px;\"><strong style=\"font-size:larger;\">How to share notebooks with students?</strong></p>\n",
-    "    <p style=\"margin-bottom:0;\"><a href=\"0-SharingNotebooks-TableOfContents.ipynb\"><strong>Table of contents</strong></a></p>\n",
-    "    <ol style=\"margin-bottom:0;margin-top:0;\">\n",
-    "        <li><a href=\"1-SharingNotebooks-CreateGitRepo.ipynb\">Create a git repository on c4science</a></li>\n",
-    "        <li><a href=\"2-SharingNotebooks-ConnectGitNoto.ipynb\">Clone and intialize the repository on noto</a></li>\n",
-    "        <li><a href=\"3-SharingNotebooks-AddFiles.ipynb\">Add your files to the repository</a></li>\n",
-    "        <li><a href=\"4-SharingNotebooks-ShareURL.ipynb\">Share the repository with students on noto</a></li>\n",
-    "    </ol>\n",
-    "</div>"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.6.9"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 4
-}