Fill in your location so we can better point you to a local retailer or field to get you started.
To echo what everyone else is saying.
If you buy cheap you will spend a small fortune sending your gun to the shop for repairs.
Do not buy a sniper rifle
Buying a intermediate or midrange brand to get started is how most people here got started.
Some good brands to look out for.
Kingarms/Cybergun M4A1 Standard Metal M4A1