There are lots of videos demonstrating stretches and basic exercises on the US site (www.runnersworld.com) that you can do at home, might be able to find something useful for yourself. For weights you could use 400g tins of beans if you dont have mini dumbells or a resistance band.
Got a scar or two from slips on trail runs, but biggest fail while running for me was an attempted jump over a fence. Caught it with my back foot, and it was only a foot high. I've had much worse accidents on a bike, mostly due to idiot drivers but there was one incident that would have been an instant hit on youtube.