How big are the files? There are several ways to do this.
USB Drive: If you only have a couple gigabytes of files to move, 16GB USB Flash Drives only cost $20-30, if you catch them on sale. PNY, Kingston, and Corsiar come to mind for brands.
USB Cable: If you have a lot of files to move, USB cables will work.
Ethernet cable: The best way to move a bunch of files without wifi. Simply drag on drop all your files into the Shared Files folder. A more technical, but easier and faster approach is to set the folders containing your files to a shared folder.
WiFi: This is the cheapest way, if you can, since you don't need to buy a cable or a flash drive. Also no wires. Simply create a network group and make sure both computers are set to the same group. Set the folders you want to share to be shared, and your all set.