Original: At Alfea, Bloom forms the Winx Club, whose members are her four friends and roommates: Stella, and the three friends she meets at Alfea: Musa, Tecna, and Flora.
Simplified: Bloom goes with Stella to the Alfea college for fairies in the enchanted realm of Magix. There, she meets three other fairies, Flora, Musa, and Tecna.