Springs are pretty easy to install on these cars. Take your time and read the instructions provided by your spring manufacturer and you should be fine.
Be careful when removing the stock spring from your shocks, there isn't a whole lot of preload on those springs as they're installed on the stock shocks, but there certainly is enough to hurt yourself if you're not paying attention during removal. You can head to Autozone and rent a spring compressor for the day, take any preload the spring is applying to the upper shock mount off, then unbolt the upper mount and remove the compressor from the spring.
Be sure to get an alignment after you get your springs on, any time you change static ride height it's a good idea to get an alignment. Not only for tire life, but for grip levels as well.
http://www.pfadtracing.com/blog/wp-c...-alignment.pdf