Most of the bikes out on the market either have a presta valve or a schrader valve. These are the gates to allowing and letting air out from your tires. Presta valves are much narrower than its counterparts and can usually be a bit more difficult to inflate.
The best option is to use an adapter that converts it into a schrader valve. This can easily be purchased for about a dollar and is easily applied and removed. All you need is an air pump and an adapter and that's it. So check out the tutorial for more information and enjoy!