FREE: (Wanted) - Bike Tube or Tire (2.0 x 26)

Hello, I am just learning biking and do not know much about bikes. I bought a used bike and it seems the seller was not very forthcoming about the bike. At the moment, there is problem with front tire's valve (Presta - French valve). The tire is flat and you can not get air into to the tire due to the valve. Also, there are cracks on the tires. I am looking for a tire tube or complete tire to fix my bike. The bike tire size is 2.0 x 26. Please, let me know if you something suitable for me. Thanks Hunkar