Cross bikes are suitable for bike beginners. They have the characteristics of road and mountain bikes.
A feature of cross bikes is that it is designed for general-purpose utility or commuter cycling on paved and unpaved roads, paths, and trails. You can cycle 15 to 30 k.p.h using a cross bike.
Cross bikes are inexpensive. You can buy a good cross bike if you have 50,000 yen(about 500 dollars). Road bikes are much more expensive than cross bikes. Road bikes usually cost more than 100,000 yen at a minimum.
You should buy a high quality bike after you have become familiar with cross bikes. You should know what you really prefer in bikes by that time.
My first bike was a Raleigh cross bike. Raleigh is a British bike. That bike got me into bikes.