I wrote about advocating space with ISS flybys on my blog recently:
Want to know a super fun and easy way to be an advocate for space exploration? It's not as hard as you might think. All you need to do is figure out when the International Space Station is flying over your area, then go outside and find someone like a neighbor or just a random person walking down the sidewalk, point to the sky and say, "Hey check it out, that's the space station right there".
You'll be delighted at their reaction... "Really? That's incredible!", "Oh wow, it's flying right over us, I can't believe it!", "It's so bright, look how fast it's moving. Thank you for showing me that."
It happens every time. And you will have planted a seed. It will be a memorable experience for them, and you've just made a supporter of space exploration, probably more as they will go on to show others.
It's as easy as that.
The simplest way to find the ISS is to subscribe to it on Twitter. you'll get notices the day it will be above you. Or you can plan ahead at spaceweather.com.
Now go out there and amaze people. Best of all, doing it will make you feel good too. Try it!