Programming

R programming language isn't that hard,as you're thinking it's easy to learn and even it doesn't require the learner to study it for a very long time. You can learn it in a short duration of time. Apparently, R is simple and effective language, which is used for statistical analysis and graphical representation of data. R is the best programming language referred by data scientists, because of it' data analysis properties. So, if you are a beginner and is curious to learn R Programming, I'll recommend you to go through this app. https://play.google.com/store/apps/details?id=technark.rforbeginners.

Yes, you can do your degree after your Diploma, but you need to pass 10 +2 to enter graduation study which you can't do on diploma certificate at least not in Karnataka.

Hi,
There are popular universities for IT in NZ. An IELTS of 6 or higher is requires by most NZ universities. For students not meeting IELTS requirements but having a good academic profile universities may offer them foundation or esl programs. You should check university websites for requirements.

Hi,
The fee structure is not mentioned on the official website. I would advise you to contact the institute directly for the information.

Hi, please find the link below
https://www.shiksha.com/careers/data-scientist-214.

If we compare these 2 languages, then Python is much more beneficial for you, as Python is uses in machine learning, which will allow you to create software for the future.

Learning from books is actually not that easy. It'll be beneficial for you, if you take some courses from Udemy or follow some YouTube Channels. They'll explain everything to you about the code.

C+ is relatively easy, as compared to Java. Java includes some features of C+. Java will be beneficial for you in terms of earnings.

Some of the best websites to learn python are Code Academy, Tutorial's Point, Python Challenge, Python.org, etc.