I want to thank all for the help, now my grandson and I have work to do

thankyou for your advice,but the layout will be larger than 24 in. wide. the track that came in the set is 24 x 48. What I am looking for is that which other size curves would I need. I have seen other layouts that had multiple tracks, this is what I would like to do. as always any help is welcome

I am setting up a layout for my grandson. I bought him a set with a 24x48 in. layout. I want to have two or three tracks for him and run diffrent trains. looking in the catalog I'm not sure what size curved track I need to do this. Is the curved track that came with this set 12 1/2 in. any advice would be a great help.

As far as trains i am looking at maybe 3 two main and one switcher. layout would be two main and some sidings. would you suggest mixing the nickel-silver sections in and hooking feeders to them?

I am looking to buy a dcc train set package. I have quiet a bit of the quick track with black base, will this work with the dcc set and nickel-silver  track, and how large of a layout will it support.