Docs: Improve Useful Links page.

docs/manual/en/introduction/Useful-links.html

@@ -25,7 +25,7 @@
 
 		<h2>Help forums</h2>
 		<p>
-			Three.js officially uses [link:http://stackoverflow.com/tags/three.js/info Stack Overflow] for help requests.
+			Three.js officially uses the [link:https://discourse.threejs.org/ forum] and [link:http://stackoverflow.com/tags/three.js/info Stack Overflow] for help requests.
 			If you need assistance with something, that's the place to go. Do NOT open an issue on Github for help requests.
 		</p>
 
@@ -46,6 +46,9 @@
 
 		<h3>More extensive / advanced articles and courses</h3>
 		<ul>
+			<li>
+				[link:https://discoverthreejs.com/ Discover three.js]
+			</li>
 			<li>
 				[link:https://threejsfundamentals.org/ Three.js Fundamentals]
 			</li>
@@ -66,21 +69,16 @@
 			 [link:http://learningthreejs.com/ Learning Three.js] – a blog with articles dedicated to teaching three.js
 		 </li>
 		 <li>
-			 [link:http://bkcore.com/blog/3d/webgl-three-js-animated-selective-glow.html Animated selective glow in Three.js]
-			 by [link:https://github.com/BKcore BKcore]
+			 [link:https://discourse.threejs.org/t/three-js-bookshelf/2468 Three.js Bookshelf] - Looking for more resources about three.js or computer graphics in general?
+			 Check out the selection of literature recommended by the community.
 		 </li>
 		</ul>
 
-		<h3>Tutorials in other languages</h3>
+		<h2>News and Updates</h2>
 		<ul>
 			<li>
-				[link:http://www.natural-science.or.jp/article/20120220155529.php Building A Physics Simulation Environment] - three.js tutorial in Japanese
+				[link:https://twitter.com/hashtag/threejs Three.js on Twitter]
 			</li>
-
-		</ul>
-
-		<h2>News and Updates</h2>
-		<ul>
 			<li>
 				[link:http://www.reddit.com/r/threejs/ Three.js on reddit]
 			</li>
@@ -90,9 +88,6 @@
 			<li>
 				[link:http://learningwebgl.com/blog/ Learning WebGL Blog] – The authoritive news source for WebGL.
 			</li>
-			<li>
-				[link:https://plus.google.com/104300307601542851567/posts Three.js posts] on Google+ – frequent posts on Three.js
-			</li>
 		</ul>
 
 		<h2>Examples</h2>
@@ -179,6 +174,13 @@
 			[link:http://12devsofxmas.co.uk/2012/01/webgl-and-three-js/ A whirlwind look at Three.js]
 			by [link:http://github.com/nrocy Paul King]
 		</li>
+		<li>
+			[link:http://bkcore.com/blog/3d/webgl-three-js-animated-selective-glow.html Animated selective glow in Three.js]
+			by [link:https://github.com/BKcore BKcore]
+		</li>
+		<li>
+			[link:http://www.natural-science.or.jp/article/20120220155529.php Building A Physics Simulation Environment] - three.js tutorial in Japanese
+		</li>
 	 </ul>
 
 	</body>

docs/manual/zh/introduction/Useful-links.html

@@ -31,6 +31,9 @@
 
 		<h3>three.js入门</h3>
 		<ul>
+			<li>
+				[link:https://threejsfundamentals.org/threejs/lessons/threejs-fundamentals.html Three.js Fundamentals starting lesson]
+			</li>
 			<li>
 				[link:https://codepen.io/rachsmith/post/beginning-with-3d-webgl-pt-1-the-scene Beginning with 3D WebGL] by [link:https://codepen.io/rachsmith/ Rachel Smith].
 			</li>
@@ -41,6 +44,12 @@
 
 		<h3>更加广泛、高级的文章与教程</h3>
 		<ul>
+			<li>
+				[link:https://discoverthreejs.com/ Discover three.js]
+			</li>
+			<li>
+				[link:https://threejsfundamentals.org/ Three.js Fundamentals]
+			</li>
 			<li>
 				[link:http://blog.cjgammon.com/ Collection of tutorials] by [link:http://www.cjgammon.com/ CJ Gammon].
 			</li>
@@ -58,21 +67,16 @@
 			 [link:http://learningthreejs.com/ Learning Three.js] – a blog with articles dedicated to teaching three.js
 		 </li>
 		 <li>
-			 [link:http://bkcore.com/blog/3d/webgl-three-js-animated-selective-glow.html Animated selective glow in Three.js]
-			 by [link:https://github.com/BKcore BKcore]
+			 [link:https://discourse.threejs.org/t/three-js-bookshelf/2468 Three.js Bookshelf] - Looking for more resources about three.js or computer graphics in general?
+			 Check out the selection of literature recommended by the community.
 		 </li>
 		</ul>
 
-		<h3>其它非英语的教程</h3>
+		<h2>新闻与更新</h2>
 		<ul>
 			<li>
-				[link:http://www.natural-science.or.jp/article/20120220155529.php Building A Physics Simulation Environment] - three.js tutorial in Japanese
+				[link:https://twitter.com/hashtag/threejs Three.js on Twitter]
 			</li>
-
-		</ul>
-
-		<h2>新闻与更新</h2>
-		<ul>
 			<li>
 				[link:http://www.reddit.com/r/threejs/ Three.js on reddit]
 			</li>
@@ -82,9 +86,6 @@
 			<li>
 				[link:http://learningwebgl.com/blog/ Learning WebGL Blog] – The authoritive news source for WebGL.
 			</li>
-			<li>
-				[link:https://plus.google.com/104300307601542851567/posts Three.js posts] on Google+ – frequent posts on Three.js
-			</li>
 		</ul>
 		<h2>示例</h2>
 		<ul>
@@ -165,6 +166,13 @@
 			[link:http://12devsofxmas.co.uk/2012/01/webgl-and-three-js/ A whirlwind look at Three.js]
 			by [link:http://github.com/nrocy Paul King]
 		</li>
+		<li>
+			[link:http://bkcore.com/blog/3d/webgl-three-js-animated-selective-glow.html Animated selective glow in Three.js]
+			by [link:https://github.com/BKcore BKcore]
+		</li>
+		<li>
+			[link:http://www.natural-science.or.jp/article/20120220155529.php Building A Physics Simulation Environment] - three.js tutorial in Japanese
+		</li>
 	 </ul>
 
 	</body>