I want to start going to gym for the first time, What are the things I should prepare?

I'm a 4'11 feet girl with a 60kg weight. YES. That's why I do get conscious about my self and get insecured. I've been considering to go to gym, but the problem is I don't know where to start, what to do, and what are the things I should buy (specifically) before I start going to gym.

The reason I want to get fit is I want to have a change for myself and be more confident about myself, learn how to love myself, and be trained about discipline. Please help mee

TT-TT

I want to start going to gym for the first time, What are the things I should prepare?
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