Create linux basics section

css/theme.css

@@ -2,6 +2,7 @@
 
 :root {
 	--accent-main: #FE6431;
+	--bg-dark-trans: hsla(0, 0%, 19%, 0.5);
 	--bg-dark: #323232;
 	--bg-light: white;
 }
@@ -51,6 +52,12 @@ img {
 	max-height: fit-content;
 }
 
+table { border-collapse: collapse; }
+td, th {
+	border: 0.075em solid var(--bg-dark-trans);
+	vertical-align: top;
+}
+
 .bg-light { background: var(--bg-light); }
 
 .centre-content { text-align: center; }

index.html

@@ -169,11 +169,81 @@
 					<ul>
 						<li>Installation complete!</li>
 						<li>What next?</li>
+						<li>Linux basics</li>
 						<li>Let's write some C&sharp;</li>
 					</ul>
 				</article>
 			</section>
 			
+			<section>
+				<article class="title">
+					<h1>Linux Basics</h1>
+				</article>
+				<article>
+					<h2>Things to talk about</h2>
+					<ul>
+						<li>Similarities and differences to Windows</li>
+						<li>Filesystem structure</li>
+						<li>Typing your password with <code>sudo</code></li>
+					</ul>
+				</article>
+				<article>
+					<h2>Similarities and Differeences</h2>
+					<ul>
+						<li>Command line → Terminal</li>
+						<li>Package management - more on this later</li>
+						<li>File system: ext4, not NTFS</li>
+					</ul>
+				</article>
+				<article>
+					<h2>Filesystem Structure</h2>
+					<ul>
+						<li>Everything starts with <code>/</code></li>
+						<li>...and everything is a file</li>
+					</ul>
+				</article>
+				<article>
+					<h2>Places to remember</h2>
+					<table>
+						<tr>
+							<td><code>/etc</code></td>
+							<td>Configuration files</td>
+						</tr>
+						<tr>
+							<td><code>/home</code></td>
+							<td>User home folders</td>
+						</tr>
+						<tr>
+							<td><code>/usr/bin</code></td>
+							<td>Program binaries (also other places; some are symlinks)</td>
+						</tr>
+						<tr>
+							<td><code>/var/log</code></td>
+							<td>Log files</td>
+						</tr>
+						<tr>
+							<td><code>/dev</code></td>
+							<td>Hardware devices</td>
+						</tr>
+					</table>
+				</article>
+				<article class="">
+					<h2>Typing your password</h2>
+					<ul>
+						<li>On Linux, typing your password is a key security mechanism</li>
+						<li>
+							Ask yourself:
+							<ul>
+								<li>"Why am I typing my password?"</li>
+								<li>"Do I understand what it's going to do?"</li>
+								<li>"Do I trust the program?"</li>
+							</ul>
+						</li>
+						<li>Ask for help / an explanation if unsure</li>
+					</ul>
+				</article>
+			</section>
+			
 			
 			<section>
 				<article class="title">