Welcome to the group. You can find enough info online to get yourself squared away. The books recommended by Blue Sky are excellent--they same ones I recommend.
Here is a website that can help you find an affordable or free clinic:
Find a Health Center
Your first task is to get that Lantus dosage right. It should keep your blood sugar constant with no food and no activity. Then you can experiment with what to eat.
What type of meter are you using and how often do you test?
We're glad you found us.
Mich