Penrice09

Any advice as to where to look for advice regarding building a small 00-gauge layout for my grandson [9yrs old].
Do not wish to spend too much as he may well loose interest sometime in the future, he's very keen at present.
Thanks

I would like some guidance as to the best way to paint a small 009 locomotive kit that have nearly built.

Should I glue footplate + cab + boiler all together and paint?
Or should I spray paint all items individually, if so what is the best glue to put them all together without the glue showing?

Thanks for any help