Here's a couple of quick examples of how to use the image cache API.

It's hard to find really good documentation on creating custom ctools style plugins, like the stylizer that comes bundled with panels. For example, if you search the web, you'll come up finding a link to http://dustinbons.com/panels-styles-plugin-drupal-7 which is not really a very good tutorial. If you view the advanced help module page on this, it comes up blank.

This was taken from http://www.netwhisperer.com/2014/01/17/5-ways-css-preprocessors-improve-stylesheets/

Taken from: http://davidshariff.com/blog/css-transparent-background/

Short review of http://toddmotto.com/mastering-the-module-pattern/

Here's a SASS snippet for making cross browser rgba gradients.

Sometimes Display Suite will render fields out of order. Use hook_ds_pre_render_alter() to change the order.

This article is a bit outdated now. For the most up to date way I create themes, see the themes for this site, which can be viewed in the github repo: https://github.com/jeffymahoney/loopduplicate.com/

Panels has a way to change the render order and all properties of panes just before they are all rendered.

Making email templates can be a real pain in the keister! When possible, use something like Mailchimp's responsive email builder instead of trying to exactly replicate a design from Photoshop; avoid having to read this article at all if you can! If you really must create an email based on a .psd or just an image and if a strict design is needed, read on.