I am a permanent resident in Guatemala and have no plans to return to the USA any time soon. I do not make any income here. Do I still need to apply for Obamacare? I wasn’t planning on filing my taxes this year, because I had no income in 2014, but do I need to file so the government knows I am exempt from Obamacare? Also, do I need to worry about form 2555?
An expatriate (expat) doesn't need to do anything unless they live in the country for more than 330 days and claim income over the filing limit.
As for Form 2555:
The tax law permits certain U.S. taxpayers to exclude up to $80,000 per year of earnings from taxation if they live and work outside the U.S. for a year or more. Learn more at Taxes for Expats.