It's the 47th sequel of the series from Super Sentai right after Ohsama Sentai King-Ohger which is the 46th sequel. If you would like to watch the super sentai series chronologically.
The most well known Super Sentai thanks to it's first american adaptation Mighty Morphin Power Rangers and the original first Super Sentai Series Himitsu Sentai Goranger.
The red ranger of Ressha Sentai ToQger has an appearance in Bakuage Sentai Boonboomger, so you might want to watch that season prior Boonboomger to appreciate his appearance more.
Both are back to basics series with cool protagonists. Boonboomger has more interesting characters but that is because it is later but skyrider is still a good example of what these franchises are
It's the very first Super Sentai series what made many of it's successors possible. If you want to watch the original first season of the Super Sentai series. Bakuage Sentai Boonboomger is the 48th Season.
