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Also, check out this from Launch Academy! Looks like they are now offerign a free intro course!
Could you be a bit more specific? Are you looking just to "try out" coding to see if it is right for you, or are you looking for bootcamps that allow you to try 2 weeks before making the commitment? Are you interested in something online, or in person (i.e. limited to a city/state?)?
If it is the online route, then you have a ton of options. Treehouse offers 1-2 weeks free intro, while sites sunch as freecodecamp, codecademy, coursera, youtube, and many more are all free.
If you are looking to check out a bootcamp/curriculum, I suggest you reach out any bootcamps yo have in mind. Many have pre-work, or would be happy to talk to you about their curriculums.