PowerShell question

1. Creat a new folder named current date (ddmmyyyy)

2. Save ApplogEvent with errors for the last week in file app.csv in your new folder

3. The event have to be sorted by name.

4.Open file

Menu 
1.Application
2.Systems
3Quit

I am a beginner to power shell and i need some help i have done this much so far.. 

$curDate=get-date -format ddmmyyyy

$folername="LogError" + $curDate

$intch=Read-Host "please type 1(App) 2(System) 3(Quit)"

switch ($intch)

{

        1 {"Application"}

        2 {"System"}

        3 {"Quit"}

}

I am stuck at this point, something as simple as possible because i am new to this. 

Thank you