What social networking sites do you use?

Hello [이름]!

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T. Christina ^^

Here are my corrections for you:

Usually, i using facebook ,instagram and youtube. 

>> Usually, I use Facebook, Instagram, and YouTube.

This social networking apps are so useful for me. 

>> These social networking apps are so useful for me. 

For example, in facebook, some food contents teaching food recipe. 

>> For example, in Facebook, some contents teach cooking recipes.

So it is so useful when i want to make some food. 

>> So it is very useful when I want to cook some food.

And i think that youtube also useful for me. 

>> I think that YouTube is also useful for me.

When i went to bed for take some rest, i used youtube for watching golf playing. 

>> When I go to bed to have some rest, I use YouTube to watch golf.

i think that this social networking make feeling good to us, but sometime this social networking make waste time. 

>> I think that these social networking sites make us feel good, but sometimes it wastes our time.

So we must control using this social networking time!

>> So we must control our time when we use social networking sites!