Complex sentence: Selena released her second studio album, "Ven Conmigo", in 1990, and became Selena's first album to be certified gold by the Recording Industry Association of America (RIAA), denoting shipments of 50,000 copies.
Split into simpler sentences: Selena released her second studio album, "Ven Conmigo" in 1990. The album yielded Selena's first gold album by the Recording Industry Association of America (RIAA), denoting shipments of 50,000 copies.