This is a GA aircraft for which the initial certification requirements have been relaxed to allow cheaper production costs and the use of more modern technology. Because of the relaxations, they are limited to a maximum of 600kg weight, a maximum of two seats, and they may not be used for instrument flying. LSA are ideal for Private and Commercial Pilot day/night training and for typical PPL use. A microlight pilot can fly them by day too.
Whilst the initial certification requirements are less than for a fully certified GA aircraft the maintenance requirements are similar.
Some aircraft are eligible to be registered as either a LSA or Microlight. If you decide to train for a PPL ensure the aircraft you use is not registered as a microlight and that the instructor holds a “Part 61” general aviation instructor rating.