What is とか? What does it mean?

Question:

I was watching something today and what is とか came up a lot. People said using it makes someone sound childish so I wanted to know what it meant?

Answer:

There seems to be 2 basic meanings.
1. To give multiple examples when you explain/say something: (や is applied if it's written)
来るときは漫画とかDS 持ってきて　Bring your manga or DS when you come over.　

2. To give uncertain information:
クラスに"やまぞえ"とかいう名前の子がいたよね I think there is a girl named like Yamazoe. Is that right?

3. Japanese launguage/culture often prefers 'vague' expressions.
とか might be one of those when speaker doesn't want to say firmly. So, here's an example:

ワーホリ行くの？　英語もっと勉強したいとか？（= 勉強したいという理由で？）　
Are you going on working holiday? You want to brush up your English or something?

＊But yeah, as you think, people saying とか frequently do sound childish or 'lowly' if he/she is grown-up.