How to transfer pics on my PC to my iphone?

Or is this even possible? I have the iPhone hooked up to the computer, but don't know what to do next. Can I sync them somehow like I did with my Windows phone?

Once you connect your phone to your laptop and open up iTunes, you should see a, Photos, tab for the iPhone. Under the photos tab you select to sync photos to iPhone and you can choose which folders you want to sync and which ones you do not.