Urban agriculture is such a cool concept, do you have any tips on how to get started?
Urban farming is pretty neat! Many villages, towns and cities are beginning to cultivate and distribute food!
Yes, it's great. Is there a particular country that's doing more with urban ag. than the rest?
It seems like lots of countries are getting on board, but the reasons why do seem to vary. In the global north, it's a desire for sustainable communities led by growers and foodies. The form social networks focused on nature and community.
Oh, yes, I bet they do help interconnect communities and bring people together! When did the firsts ones start popping up?
Actually, urban agriculture started all the way back in ancient Egypt! Community wastes were used to feed urban farming. 
Oh, wow, all the way back then? That's pretty interesting! Now, tell me, do you need a lot of land to start ubran agriculturing? Or could I start with my backyard?
You can definitely start with your own backyard! You don't need to live in an urban area either! Peri-urban agriculture is beginning to catch on in the fringes of urban areas.