Diploma

Yes, you can join it surely The International Institute for Democracy and Electoral Assistance (International IDEA) is an intergovernmental organization that works to support and strengthen democratic institutions and processes around the world, to develop sustainable, effective and legitimate democracies. It has regional offices in Wider Europe (Netherlands), Latin America and the Caribbean (Chile), Asia and the Pacific (Australia) and Africa and West Asia (Ethiopia). The organization's headquarters is in Stockholm, Sweden.
YVES Leterme, former deputy secretary general at the OECD and former Prime Minister of Belgium, has been the secretary-general since 2014, replacing Vidar Helgesen. International IDEA is an official United Nations Observer.

Yes, of course you can.
Online Submission & Confirmation of Option Form of CAP Round II through candidates Login by the eligible Candidate24/07/2019 to 26/07/2019Display of Provisional Allotment of CAP Round-II28/07/2019Reporting to the Admission Reporting Centre (ARC), as per Allotment of CAP Round II if seat is allotted for first time in CAP Round II. [Note:
I. Candidates who have been allotted the seat as per their first preference in Round II (auto freezed) must report to ARC. Such candidates shall not be eligible for participation in subsequent Rounds. Ii. Candidates who have been allotted other than first preference and self-freeze their allotment in Round II through their login must report to ARC. Such candidates shall not be eligible for participation in subsequent Rounds. [Candidate must exercise this option carefully.]
iii. Candidates who have allotted other than first preference and want betterment in the subsequent rounds must claim the allotted seat by reporting to ARC for betterment]Counselling Round at S. B. M. Polytechnic, Vile Parle (West), Near Cooper Hospital, Mumbai-400056.

Yes, I think you can do it through distance education.
The NFA shares its 107-acre (0.43km2) Emmetsburg campus with the Emergency Management Institute (EMI) operated by the Directorate of Preparedness branch of FEMA. The campus also includes the Learning Resource Center (LRC) library, the National Fire Data Center, and the National Fallen Firefighters Memorial.
The campus was the original site of Saint Josephs Academy, a Catholic school for girls from 1809 until 1973. It was purchased by the U.S. Government in 1979 for use as the NETC.
In 2008, the National Fire Academy trained over 122,000first responders from all 50 U.S. states.
The campus library at the National Fire Academy collects resources on fire, emergency management and other all-hazards subjects. With its collection of more than 208,000 books, reports, periodicals, and audiovisual materials, the NETC Library facilitates and supports student and faculty research and supplements classroom lectures and course materials. Internet users may access the library's online catalog to perform their own literature searches.[15]The NETC Library catalog is a unique guide to periodical literature with citations on fire, EMS, emergency management, natural disasters, and homeland security topics going back to the early 1970s. Librarians on staff index nearly 5,000 newly published articles each year, from scores of professional journals, magazines and newsletters across the country and internationally.

If you don't know the pay scale in your area find out. The starting wage for brand new yoga teachers here is $35 at a gym or small studio, and $45 at a more established yoga studio. Experienced teachers, or teachers with additional skill sets, and training, can expect between $50 and $75 per class.
Average Yoga Instructor Salary
The average pay for a Yoga Instructor is Rs. 494 per hour. The average pay for a Yoga Instructor is Rs 304,102 per year.
To become a Yoga Instructor, you will need at least a few years' experience practicing yoga, preferably working with one or two teachers. You will also need a dedicated yoga certification and undertaking other training courses will help you stand out from the crowd.