I've completed 10th grade. Is it possible for me to get in a foundation year course, or a diploma course? and if i can will i be able to get admitted in a university after i complete the 1 year foundation?

Hi, you can get admission for a foundation course in New Zealand, but you will face problems from immigration New Zealand. They wont issue Visa for foundation courses. Visa will be given to programs starting from level 5 which requires a intermediate qualification(10+2).