What causes my Saturn not to start?
Turn the key and there's a click and the security light on dash lights up

After some minor changes in the 2005 Ion Red Line, Saturn made a few more for 2006. With Ion production scheduled to conclude in 2007, Saturn probably saw the end and started to pull back the reins. Enter the 2006 Ion Red Line, which features sharper handling around corners and better acceleration from a standing start due to a limited slip front differential. Otherwise, the Ion Red Line has maintained its basic identity as a sporty coupe on performance enhancers.
The 2006 Saturn Ion Red Line has a 2.0 L, 205 hp I4 engine with 5 speed manual transmission. Fuel consumption runs from 23 mpg in the city and 29 mpg on the highway. This coupe still seats 4 and keeps its unique 4 door design. Cargo space comes out to 14 cubic feet with standard features that include power windows, power door locks, leather seats, and ABS brakes. Options include traction control and sunroof.
While the Ion Red Line has attracted a market for tuner car enthusiasts, consumers still have the same issues they had with earlier models. More specifically, they would have liked to see more quality materials for the interior. Otherwise, owners enjoy the power under the hood and the low price tag. As production winds down for the Ion, Saturn continues to develop the line with an eye toward the future.
Turn the key and there's a click and the security light on dash lights up
2006 red line, put new motor in drive about 30,000 miles on it, faithfully checked and added oil.....took the head off, But not sure where to go from here any help would be great
what can you do to get easy power gains?
Airbags
Dual front airbags · Front and rear head airbags
Audio System
Single disc in-Dash CD · MP3 player: CD MP3 Playback · AM/FM radio
Brakes
ABS: 4-wheel · Front brakes: ventilated disc · Rear brakes: disc
Comfort Features
Steering wheel trim: leather
Convenience Features
Center console: front console with storage · Multi-function remote: trunk release · Steering wheel: tilt-adjustable · Steering wheel mounted controls: cruise controls · Storage: seatback
Driver Seat
Manual adjustments: 8
Instrumentation
Warnings and reminders: low fuel level
Mirrors
Exterior mirrors: power
Rear Seats
Type: bench
Roof
Sunroof: power glass
Seats
Driver seat manual adjustments: height · Front seat type: sport bucket · Rear headrests: adjustable · Rear seat folding: split · Upholstery: leather · Upholstery accents: cloth
Spare Tire
Mount Location: inside
Suspension
Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Suspension Type: torsion bar · Stabilizer bar(s): rear
Telematics
Satellite communications: OnStar
Tires
Type: performance
Tires and Rims
Wheels: alloy
Windows
Front wipers: intermittent