Forum:Little help

Greetings all,

I've recentley started playing duel monsters again and seem to have forgotten a few details, I want to play the game by the official rules seeing as last time i played it was to my best understanding. So here's my queries...

1- Can a momster attack in the same turn it was summoned or do I have to wait a turn?

2- is it possible to remove spell and trap cards from the field so that I can place others down?

3- if a trap card is placed and in my opponents turn after they atack can I activate it or do I have to wait for my turn to come around again?

4- I'm having some trouble with this cards effect, the card is "Golem sentry" and the effect is...

"once per turn, you can flip this card into face-down defence position. when this card is flip summoned, return 1 monster on your opponents side of the field to the owners hand"

...correct me if I'm wrong but does this mean that if a card starts in face-down can I flip it to face-up attack and then durng main phase 2 flip it to face-down defence again?

I'd be greatful for any help you can offer me :)

James