Try some "lock-ease" or lubricant suitable for locks in the ignition switch, also try another key if you have one if it doesn't improve things you will need an new ignition lock.For lock replacement instructions there is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online