I need super help!! want to some make simple app

I want to make this style app

(1) Login (If accept clear goto (2))

(2) SideNavi[Left]+TopSearchingBar[Top]+Board[Reamin of page](change if clicked menu in SideNavi )

How to do that, I searching every examples, But so monotonous and not seperated
but I want to sepereate files for function, easy to check.

The best way to get started with Fuse is following the Tutorial. It covers layout basics, structuring your project (“separation”), navigation and many other useful aspects.