Supposed you don't have anything. Everything is taken away from you. You are trying to survive making a living.
As old proverb says "Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime.", a good Samaritan gives you photographic tools for you.
Now you have:
1. A low end DSLR (with built-in flash that comes with it)
2. A cheap zoom lens kit (ok, for the sake of discussion, 18-55)
3. memory card (again, for the sake of discussion, 2GB)
4. Your current photographic skill.
5. Your current marketing skill.
Rule:
1. no other gadgets! (you don't have computer, no other lenses, nothing). You only have 5 things above and will use those 5 things to start.
2. You can't use your current networks. Start from zero. Imagine you are beamed-up to another city where nobody knows you.
3. You don't have portfolios.
4. You can't approach the good Samaritan as your first potential client.
Okay, that's all about it. Else, you can use your own imagination. The question is: Can you survive?
I would love to hear what your all strategies are. :)