bought a SE rear lower lip spoiler second hand and its red... my cars gold soo yeah going to paint the lip as im to lazy to paint the whole car to match it

um yeah so im thinking this would be an ideal item to practice/learn spraying on so when it comes to it i can do my own front bar and maybe the whole car one day if i get good enough.
basically i was wondering if anyone knows of some good online guides and/or where and what supplies and equipment ill will need. such as where to buy paint and clears? what gun to buy and so on.
cheers
a.irwin