Hi i just started stop-motion animation

Hi my name is DJ Hankey but you can call me DJH for short.
I have just recently started stop-motion animation with some legos i found around my house. I got inspired to do it by watching really funny videos of this kid that is my age that does videos of his own skits with legos.
So since i just started can you give me some tips on how to build cenery and ideas for videos.