Pointers for further Reading

Rails Documentation

• The Rails Guides are an excellent starting point.
• with Active Record Querying Rails Guide you’ll be able to perform all kind of searches on your model, and
• you’ll find all available data types for fields in ActiveRecord Migrations
• Tobi of RailsGirls Berlin created a Cheat Sheet for Rails Beginners
• last not least, Rails Girls Berlin has pointers to excellent further information.

Troubleshooting and Everything Else

• first, find and read your error message and find the exact spot/line where the error was caused.
• the latter cannot be stated often enough.
• Stackoverflow is a great resource for all issues around rails, not only for troubleshooting, but also for learning how to do things.
• google - e.g. the error message minus any application specific stuff (without “Einsetzstellen”)