My mum won't let me join ANY social networks!?

[Venkatesh]

Layla, If you are under 16 years of age, then what your Mom says is quiet right.
Your Mom's assumption is something like her child would spend so much time in these unnecessary things and start to forget about other things that are very much more important.

Explaining it in more detail or revealing relevant facts or ideas might help sometimes. You need to clearly explain your point of view and how good!! and useful it would be if you have a Facebook account.

And I have a question for you. : What brings you here on Yahoo Answers??!!. Just to ask this question or do you use Yahoo answers frequently?.

Ask your friends to join here (rather than on FB or Twitter or Instagram) and share knowledge and good thoughts. A very good community is being build up here for years. Make use of some good resources available on the internet.