What is the best train to take travel from Paris city centre to Euro Disney?

I am travelling to Euro Disney from Paris city centre on 23 November. What train do I take? (I will be returning to Paris on the 24th). Do I have to book this train in advance? Also, I only want to visit the park on the 23rd - what is the best ticket to purchase for a one-day visit? Should I purchase this ticket in advance?
Where is the best place to buy tickets for Euro Disney?
Is there any need to book train tickets in advance?

What areas in Paris are good to stay in if we want to travel by train to Eurodisney?

We want to stay in paris and travel by train to Euro-disney during the day, what areas are close to train stations that go there, and, what time do the trains run until at night?

what tickets are available for the paris metro 2 adults and 3 children for a day trip from disneyland?

we want to spend a day in paris visit the main attractions and then head back to disney where we are staying what options do we have is there any family reductions etc