Getting a property management firm or doing it yourself?

[Davey Davanoski]

When you buy a multi family building for first time or when your decide to grow your portfolio with second, third and so on multi family building. How do you do property management? 

Do you do yourself, and if you do how:? 

How should i choose property management firm? 

Is it bad move to do it yourself? 

What skill or experience i need to have to do it myself? 

Is it worth it? Or its better to assign firm until  your rental portfolio start to grow and to open my own property management firm?

Sorry, too many questions :D