Model railroads.

So i recently started into a new hobby. I decided to get into HO trains. I am in the process of building my layout table, Going to be a 12x8 L shape. Looking at a Rapido Diesel unit, going to build my layout in a 1966-1974 era, i grew up in a train station from 5 yrs old till 14 yrs old. We lived in the CN train station during that time.

Anybody else into this hobby that can offer some advice and places where to buy from?