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A collection of timing-related mistakes that startups make, like hiring aggressively just before fundraising, or overlooking seasonality or sales cycles when creating a fundraising roadmap.

An introduction to real-time WebSocket apps with Rails

Almost every web app requires a sign in form.In Ruby, the popular choice is the Devise gem for Rails.

Database load can be a silent performance killer. I’ve been optimizing the query performance of a web app I run designed to get people involved in open sourc...

Java Programming tutorials and Interview Questions, book and course recommendations from Udemy, Pluralsight, Coursera, edX etc

Well I had a request from a YouTube subscriber for a Tutorial Series on using Tiled to create a tiledmap game with Cocs2D. I have made the first Part of this Tiled mapEditor tutorial series. The vi…

Many of us have a problem following through on our intentions. And it’s more than just a difficulty in predicting our future desires. It’s ...

This is wxPython tutorial. In this tutorial, we will learn the basics of GUI programming in wxPython.

Trails to help designers and developers learn various topics. - thoughtbot/trail-map

Newly updated for Rails 6, the Ruby on Rails Tutorial book and screencast series teach you how to develop and deploy real, industrial-strength web applications with Ruby on Rails, the open-source web framework that powers top websites such as GitHub, Hulu, Shopify, and Airbnb. The Ruby on Rails Tutorial book is available for purchase as an ebook (PDF, EPUB, and MOBI formats). The companion screencast series includes 14 individual lessons, one for each chapter of the Ruby on Rails Tutorial book.

I'm not very smart on installing packages on Linux, but today I need to configure a Tomcat on a CentOS 5.2. The CentOS 5.2 has Tomcat 5 available as yum