Where is initialization routine for Windows Form App?

Hi VB experts,

I am a newbie to VB.net. I am creating my very first VB.net today. I have a really basic question to ask. Sorry if it sounds stupid. Where is the initialization routine for Windows Form app? It looks like InitializeComponent() but this routine contains auto-generated code. Is it safe to touch InitializeComponent()? Or do I create my own initialization routine?

At a loss now. Thank you for your advice.