First time ever buying stocks and i have some questions.

Hello everyone,

I wanted to buy some stocks for the first time.

First fo all do you have some generall advice that you could give to a first time stock-buyer ?

Second, what does 'Market closed' mean when i try to buy stock when does it 'open' again.

Third, what platform do you suggest for trading ? (Location, if that matters: Europe)

Thank you for your help.