There are several ways on how you will be able to send your picture files from PC to your cellphone and vice versa. The most common way to transfer not only picture files but also different file types to your PC is by using a data cable. This will enable your mobile phone to act like a normal flash drive. After you have connected the mobile phone to your computer, you may then be able to access all the files saved on your cellphone and you can also save, delete, copy, and paste items on your mobile phone. Make sure that you have installed the necessary drivers for your mobile phone to ensure that you will be able to transfer files to and from your mobile phone. Usually, these drivers are downloadable from the manufacturer's website. You can also use the internet to search for drivers.
Another way to send files to your mobile phone is by using wireless interface such as a Bluetooth dongle. You can purchase one from most hardware stores if your computer does not already have this wireless interface. Most of the laptops today already have Bluetooth interface so you may no longer need to purchase one if your laptop already have this. But make sure that your mobile device is also capable of sending and receiving files through Bluetooth.
Another method is to send the files through email messages. To do this you will need an internet connection for your computer and the mobile phone should also be able to receive MMS messages. You can log in into your email account and send the files that you want to send just like how you normally send an email. But instead of an email address, you will need to enter your mobile phone number followed by the email of your carrier, for example firstname.lastname@example.org.