How can i start the oven in a frigidaire propane gaz range model # lglf305mmf?

Question

I bought a frigidaire propane gaz range on the 5/8/13 from lowe's home centeres, INC. 260-266 TURNPIKE ROAD WESTBOROUGHT, MA 01581. I didn't use it since last week. The top is running verry well but it's the oven i cannot figure how to use it so pleaze i need your help . Thank you. The gaz range medel # lglf305mmf