The statement that the universe is expanding faster than light refers to the metric expansion of space. It means that the distance between distant galaxies or clusters of galaxies is increasing, and this expansion can cause galaxies to move away from each other faster than the speed of light. However, it's important to note that this expansion is a property of space itself and not the motion of objects within space.
The concept of going "outside" the universe is not well-defined within our current understanding of the universe. The universe, as we currently understand it, includes all of space, time, matter, and energy. It is not considered to be embedded within anything else.
The observable universe is the portion of the universe that we can currently observe, and it is limited by the speed of light and the age of the universe. Beyond the observable universe, there may be regions or structures that are not accessible to our observations, but it is speculative to discuss what might exist in those regions.
It's worth noting that our understanding of the universe is based on scientific observations and theories, which are continually evolving as we gather more data and develop new ideas. Speculating about what lies beyond the universe is currently beyond the scope of scientific inquiry.