Thing internet?

I've got a laptop and would like internet flatrate. I can only mobile not landline

Question 1: How much gigabyte do I need to surf the web regularly for 1-2 hours, to stream 1-4 videos or sports events?

Question2: Is a flat with contract better or prepaid?

Frage3: I also need a Surfstick.Besser equal with flat order or individually?

Frage4: I have a laptop with a drive and a burner. How many gigabytes of internet flats do I need to watch DVD or listen to music? How much gigabyte do I need to burn movies or music from the internet?

Question5: How many gigabytes do I need if I order a subscription on the Internet like Netflix or other?

Question6: How much downlood speed do I need in all this?

Question7: If I later charge Smartphone, then I can use the flatrate for laptop with for Smartpone?

So with all the things you want to do that would be damn expensive if you want to do it all over mobile.

Why can't you get a landline?

Mobile is expensive. Very expensive.

There are many factors in it. Depending on the content, surfing can take a few hundred megabytes to several gigabytes per hour. Depending on what you call and how often you change sides. For video transmissions, the resolution of the videos plays a very crucial role. With a good HD stream can ever come together around the 3GB per hour.
Prepaid in these dimensions will hardly find or pay.
Instead of a surfstick I would rather resort to something like the Gigacube from Vodafone. Not so mobile but in contrast to all known surf sticks and their tariff options at least halfway sufficient for the claims.
You do not see DVDs online. Would be a bad choice too. Too poor image quality with too much data. Online there are only correspondingly adapted video streams. Music albums have between about 100 and 300 megabytes of data, depending on the formats in which they are obtained.
For the subscription itself none. Only retrieving the content requires appropriate traffic. See answer 1.
Between 6 and 16 Mbit you should have to synonymous to be able to stream higher video quality easily. As a rule, LTE-based solutions have the required performance even with mediocre connection.
If the SIM card can be used in the mobile phone, yes. Telephony is usually not possible with these.