I am making my way through learning Ruby and Rails with a couple projects that I’ve always wanted to write. Rather than writing sample applications I find it a lot easier to learn if I have a need to use a tool, and these projects provide that need.

As I’m working through each one I’m discover gaps in what I have learned thus far, and have found these various tutorials helpful.

• Creating Two Models in One Form
• Creating Many Models in One Form
• Creating Variable Number of Models in One Form
• Basic User Authentication in Rails
• Starting Ruby on Rails: What I Wish I Knew
• Railscasts
• attachment_fu and ImageScience

This list will continue to grow as I find more useful tutorials.

While working my way through Agile Web Development with Rails (yes I’m learning Rails and Ruby, more on this too later) I ran into the following error:

while trying to add a column through a migration. Searching Google took me to a couple of places, but it took a while to find a result that explained how to resolve this issue.

Luckily I came across this post by Mark Cornick, which explained that the issues was caused by the version of SQLite3 that is included in OS X 10.4.

After downloading and installing (from source) the latest version of SQLite3, and uninstalling and reinstalling the sqlite3-ruby gem

I was able to run the migration to add the column and continue on.