As Mark Twain once said, “the secret to getting ahead is getting started.” Well, you’re starting now, so we’re going to dive in and learn about variables, constants, and simple data types.

Today you have eight one-minute videos to watch. Once you’ve watched each video there’s a short test to help make sure you’ve understood what was taught.

I know, I know: the temptation is strong to continue on to watch more videos and take more tests beyond those linked below, but remember: don’t rush ahead! It’s much better to do one hour a day every day than do chunks with large gaps between.

  1. Variablestest
  2. Strings and integerstest
  3. Multi-line stringstest
  4. Doubles and booleanstest
  5. String interpolationtest
  6. Constantstest
  7. Type annotationstest
  8. Simple types: Summarytest

When you’re finished, don’t forget to tell other people about your progress. Yes, this is only day one, but the more motivation you get now the more you’ll be able to power through when things get tougher!

Reminder: I have a free iOS app that helps you practice Swift right on your iPhone and iPad. It contains the same lessons and tests as above, plus lots more bonus activities. And did I mention it was free? Download it here.

Need help? Tweet me @twostraws!


The 100 Days of Swift is a free collection of videos, tutorials, tests, and more to help you learn Swift faster. Click here to learn more, or watch the video below.

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