The GBB can seem aggressive, but they are curious. Mine seems to "investigate" everything that enters it's enclosure. Even when doing cage maintenance. They also kick those irritating hairs.
Since you are a new T owner, stick with terrestrial T's until you research and learn more about them. Aboreal T's seem to need higher humidity and it can be tricky to maintain that.
Bp's
2.0 normal; 1.1 pastel; 0.1 pinstripe
T's
0.5 Arizona Blonde; 1.1 A. Metallica; 0.1.1 A. Versicolor; 1.0 Mexican Fireleg; 0.1 B. Smithi; 1.1 B. Vagans; 0.1.1 GBB; 0.0.1 Rose-hair; 0.0.1 A. Brock; 0.2 G. Pulchripes; 0.1.1 P. Irminia; 0.0.3 P. Metallica; 0.0.1 OBT; 0.1 C. Fasciatum; 0.0.2 E. Murinus; 0.1 H. Gigas; 0.0.5 LP; 0.0.2 P. Regalis
Awesome stuff, BIG congrats! And the G. rosea is suuuuuuuuuper easy to care for, keep her enclosure dry, offer a hide and a water dish and you're set! Glad to see you got over your fear and got into the spider hobby!
1.0 Normal - Maynard
1.0 POG - Victor
0.1 YB - Diana