On a work permit, can my spouse and kids also travel with me

[Tedd]

If I have employer specific work permit,

1. Can I take my spouse and kids along with me? If Yes then on what visa, If No then when can they enter Canada?
2. Can my spouse work there?
3. Can my kids start studying? Do they require study permit? If yes, then can we apply from within Canada?

Experts please help

Thanks!!!