new ubuntu resources

mattmakai · mattmakai · commit 6a33a41971cb · 2018-11-08T14:14:37.000-05:00
diff --git a/content/pages/03-data/16-pandas.markdown b/content/pages/03-data/16-pandas.markdown
@@ -66,3 +66,12 @@ is a data structures and analysis library.
   with a public data set of murders in Boston from 1966 to 1975. This
   particular data problem may not be your thing but by going through
   the process you can learn a lot that can be applied to any data set.
+
+* [A Gentle Visual Intro to Data Analysis in Python Using Pandas](https://jalammar.github.io/gentle-visual-intro-to-data-analysis-python-pandas/)
+  presents spreadsheet-like pictures to show conceptually what
+  pandas is doing with your data as you apply various functions like
+  `groupby` and `loc`.
+
+* [Data Manipulation with Pandas: A Brief Tutorial](https://www.marsja.se/data-manipulation-pandas-tutorial/)
+  uses some example data sets to show how the most commonly-used functions
+  in pandas work.
diff --git a/content/pages/04-web-development/17-css.markdown b/content/pages/04-web-development/17-css.markdown
@@ -90,6 +90,8 @@ web application's design.
 
 * [HTML5 Boilerplate](http://html5boilerplate.com/)
 
+* [Spectre](https://picturepan2.github.io/spectre/)
+
 
 ## CSS resources
 * [The languages which were almost CSS](https://eager.io/blog/the-languages-which-almost-were-css/) 
@@ -103,6 +105,13 @@ web application's design.
   is one of the largest collections of valuable resources for frontend
   learning both in CSS as well as JavaScript.
 
+* This series on how CSS works including
+  [How CSS works: Parsing & painting CSS in the critical rendering path](https://blog.logrocket.com/how-css-works-parsing-painting-css-in-the-critical-rendering-path-b3ee290762d3)
+  and 
+  [How CSS works: Understanding the cascade](https://blog.logrocket.com/how-css-works-understanding-the-cascade-d181cd89a4d8)
+  examines the rendering methods browsers use to display web pages along
+  with details of the algorithms they use to cascade style rules.
+
 * [CSS Reference](https://cssreference.io/) provides much-needed visual 
   examples for every CSS property to show you what they are actually going 
   to look like on your pagee when you use them.
@@ -123,6 +132,10 @@ web application's design.
   is a detailed guide for learning how to do element positioning correctly
   with CSS.
 
+* [Did CSS get more complicated since the late nineties?](https://hiddedevries.nl/en/blog/2017-07-03-did-css-get-more-complicated-since-the-late-nineties)
+  is a solid look back at how CSS evolved and where it has ended up today
+  compared to its origins.
+
 * [Using feature queries in CSS](https://hacks.mozilla.org/2016/08/using-feature-queries-in-css/)
   covers the `@supports` rule and how to use it in your stylesheets.
 
@@ -156,11 +169,26 @@ web application's design.
   fix this situation with `display` as well as other less visible properties
   such as floats and `auto` width.
 
+* [30 seconds of CSS](https://30-seconds.github.io/30-seconds-of-css/)
+  provides short useful code snippets for you to learn from and use for
+  building your own web applications.
+
+* [CSS: The bad bits](https://www.joeforshaw.com/blog/css-the-bad-bits-and-how-to-avoid-them)
+  examines global scope, implicit percentage styling rules and the z-index
+  which can be difficult to use and require some restraint to ensure they
+  do not cause issues for the rest of your stylesheet rules as you create
+  and maintain your frontend.
 
 * [Improving Your CSS with Parker](https://csswizardry.com/2016/06/improving-your-css-with-parker/)
   shows how to use the static CSS analysis tool 
   [Parker](https://github.com/katiefenn/parker/) to improve your stylesheets.
 
+* [Third party CSS is not safe](https://jakearchibald.com/2018/third-party-css-is-not-safe/)
+  is a good reminder that any code you did not write yourself, especially
+  code served through 3rd party sources not under your control can contain
+  potentially malicious applications, such as the experimental CSS keylogger
+  hack that made the rounds in early 2018.
+
 
 ## CSS learning checklist
 1. Create a simple HTML file with basic elements in it. Use the
diff --git a/content/pages/05-deployment/14-ubuntu.markdown b/content/pages/05-deployment/14-ubuntu.markdown
@@ -13,7 +13,7 @@ meta: Ubuntu is a Debian Linux-based operating system distribution often used fo
 [Python development](/learning-programming.html) and 
 [web application deployment](/deployment.html).
 
-<a href="https://www.ubuntu.com/" style="border: none;"><img src="/img/logos/ubuntu-linux.png" width="100%" alt="Official Ubuntu logo. Copyright Canonical Ltd." class="technical-diagram"></a>
+<a href="https://www.ubuntu.com/" style="border: none;"><img src="/img/logos/ubuntu-linux.png" width="100%" alt="Official Ubuntu logo. Copyright Canonical Ltd." class="shot rnd outl"></a>
 
 
 ## Why is Ubuntu important for Python?
@@ -53,17 +53,20 @@ repository system packages.
   is a great tutorial on which packages you should install and why to 
   use [Python 3](/python-2-or-3.html), OpenCV and Keras on Ubuntu Linux.
 
+* [How to Use the Command Line for Apple macOS and Linux](https://www.taniarascia.com/how-to-use-the-command-line-for-apple-macos-and-linux/)
+  is a fantastic guide relevant to Ubuntu users who should be able to use
+  the terminal to accomplish their tasks.
+
+* [Linux System Mining with Python](https://echorand.me/linux-system-mining-with-python.html)
+  shows how to use Python libraries to gather Linux system information
+  and work with it programmatically in your applications.
+
 * Canonical, the organization that produces Ubuntu, typically pushes the 
   boundaries on non-LTS releases, but occasionally rocks the boat with
   major changes for an LTS release. 16.04 LTS was one such version, which
   is described in this article about how 
   [Ubuntu 16.04 proves even an LTS release can live at Linux's bleeding edge](http://arstechnica.com/information-technology/2016/05/ubuntu-16-04-proves-even-an-lts-release-can-live-at-linuxs-bleeding-edge/).
 
-* Ubuntu has been a target operating system for Docker since the beginning of
-  the project. Here's a guide for 
-  [how to install Docker on Ubuntu 14.04 LTS](http://www.liquidweb.com/kb/how-to-install-docker-on-ubuntu-14-04-lts/),
-  one of the older operating system releases that supports containers.
-
 * [My First 10 Minutes On a Server - Primer for Securing Ubuntu](http://www.codelitt.com/blog/my-first-10-minutes-on-a-server-primer-for-securing-ubuntu/)
   is based off an earlier post of the first five minutes on a Linux server.
   This one is specific to Ubuntu Linux and goes into user accounts, sudo
@@ -75,3 +78,5 @@ repository system packages.
   how he went about securing package management, security standards and 
   file integrity on Ubuntu 14.04 LTS.
 
+* [In Beaver We Trust: A Lengthy, Pedantic Review of Ubuntu 18.04 LTS](http://blog.bityard.net/articles/2018/April/in-beaver-we-trust-a-lengthy-pedantic-review-of-ubuntu-1804-lts.html)
+  examines the latest Ubuntu Long Term Support desktop release in detail.
