How do I get rid of dark spots on my skin?

Before, I only tanned everyone once in a while and my skin was relatively healthy. However, I got a job as a lifeguard last summer and was stupid in not wearing sunblock everyday. Now that my tan is fading, I am noticing small brown and black spots staying on my skin, mainly on my forearms. Is there any way to get rid of them?|||i would go and see a doctor and have him look at it just to make sure that it isn%26#039;t something serious. since you didn%26#039;t wear sunblock, you just want to make sure, right?