It's not legal, and if you get caught licensee result in having your license deferred. Practically speaking , it depends on where you live and who is teaching you. If you live on a farm or rural area, where there is no or little traffic and have someone like a parent who can teach you good basic driving skills then its probably ok. If you live in NYC or a very populated area don't even try. A large empty parking lot is a good place to learn as is a private property with a long road.