1) get a Cat5 cable and connect b/w 2 Pc ,99.99% modern pc's have Ethernet port [cat 5 = ethernet cable /cable we use to connect ROuter to NIC slot on pc]
2) Give a IP address to PC 1
3) Give IP add to PC2
3)since both pc is under same workgroup(mostly "WORKGROUP"
a) Share a Drive on ur Laptop
b ) open ur friends PC>Copy the files u want > Go to my computer>Network place>Select ur PC from list> (Enter username and password )
ur shared drive will b shown >Paste it
edit
added a external guide link
*www.makeuseof.com/tag/5-ways-to-transfer-files-from-one-computer-to-another/