As many Peruvians don't have their own computer or Internet access, you can find Internet cafes around every corner in Lima. Size, equipment and speed differ from location to location. But all Internet cafes offer at least surfing the net and e-mailing, most national and international calls via Skype.
Better ones provide additional services like printing, scanning, CD / DVD copying and instant messaging. Prices are very reasonable. An hour will set you back with more or less US$ 1.-.