How start with Kafka?

[Andy]

I am Kafka beginner.
I have compiled under Windows and Visual Studio 2015 librdkafka and
cppkafka .
I have two examples: kafka_consumer.cpp and kafka_producer.cpp.
I try:
>producer -b 127.0.0.1:9092 -t topic
>consumer -b 127.0.0.1:9092 -t topic -g group
but is bad connection