i am learning PPC pl give me one website (demo site) just for practices how to bit choice the keywords
What is your targeted keyword? Go to Google, search for the keyword and check out those sites on top of organic result and links on the right site of the result, they are sponsored links, hence a Google Adword/PPC users, check them out..
Join any affiliates program and they will provide you some custom page for which you can do PPC, It will also earn you some money.