Could anyone brief me about JLPT? (Pws...)

Well, was going through the sub nd got humbled pretty quickly ffs. Could anyone lemme know how exactly am I supposed to register? If I register now, am I gonna write the exams next year?

Im like a fetus compared to y'all, so I have zero knowledge abt any of these things, I've heard n5 is the beginner level so I'm prolly gonna do that.

Could u lemme know when can I register? Nd also small fyi I live in Bangalore, so if anyone's pursuing this in Bangalore I'd love if u DM nd spread ur divine knowledge to me aswell.