Emacs org-mode examples and cookbook

A lot of the things in the article are supported.

You can format text and tables via Markdown, add MathJax equations, etc.

Then you can write down code, evaluate it, and it can evaluate to images as well... charts and such.

You can optionally export the resulting document to HTML and share it in static form, or just share a link to the notebook. In addition, github supports Jupyter notebooks.

There's also MobileOrg on iOS, but can only read from WebDAV or Dropbox.

This gave me an idea on how to organize interesting stuffs and it's quite simple. Thanks! I hope nickpeterson did got that idea too. And what I could recommend is to use emacs and org-mode everyday especially when taking notes. You can't learn without using them. It gave me lots of benefits.

This is a great setup. However, on a small screen phone without a physical keyboard I tend to prefer a touch-based application. I rarely make any edits to my org files, but I often want to have a quick look.

Start using the tools.

For LaTeX: I very strongly recommend picking up a copy of the Lion Book (Leslie Lamport) and running through the examples. I actually picked up a great deal by taking documents I'd found online in bastardised for and tagging them up manually in LaTeX for output into flexible formats -- HTML, PDF, ePub, and more. It turns out that the basics of LaTeX are, well, pretty basics. Paragraphs are double returns, which buys you a lot. Italic and bold text, and the ``quoting'' style, are the main adaptations I had to make.

Digging into the equations and images features takes some doing, but you can produce excellent docs well before that point.

Stack Exchange has a wonderful LaTeX community.

Of the rest of your list:

1. Emacs: I actually got pretty good at it at one point, then signed on to a gig (in the days just before running one's own Unix was readily possible) in which it wasn't available and the boss (idiot) didn't believe in installing anything which wasn't vendor-provisioned. That said: commit to using it. I've found that I prefer vim's editing modes, but there's viper-mode in emacs. The power of having all text interactions under your editor is ... immense.

2. Regex: Start with the basics. The Sed & Awk book (O'Reilly) is a good start. Most of it is simple substiutions, and you can get tremendous mileage from that, though as with many tools, you can abuse the concept. Perl remains probably the canonical home for advanced regex use, though most languages have some facility for it now.

3. Bash: I'd recommend this, if only because Microsoft has a poor track record of integrating with others and/or supporting other tools over a long period of time. Bash has existed on Windows since the 1990s under various toolkits, most notably Cygwin, and is now pretty much native.

4. Unicode: mostly a matter of figuring out what bits you need within a given project. I'd deprecate that on your list and consider it something to pursue on an as-needed basis.

I can't much speak to the remainder of your list, though I'd suggest treating them as tools adapted to uses and goals.