According to Osho, asking about nirvana before learning meditation is jumping an ocean without first learning the A-B-C. He won’t predict attainment without meeting you; first see the real situation. Know that nirvana means the ego-lamp going out, not an intellectual feat. Begin with meditation, drop hurry, and let understanding ripen step by step.
Start with simple meditation and patience; nirvana is when the little “me” flame fades, not something you figure out by being clever.