Hello there! Alunaria already said everything I wanted to say (as usual!). I’ll just add that if your character has an interest in herbalism and botanical matters in general, the Botany Band is an Alliance-centric guild which runs events every Monday and the grand majority of them is open to general public. 
If you have an interest in the Horde side (which is more active at the moment–but the Band is working on changing that! 
), I can recommend the Hand of the Titans, the Convocation of Elrendar, the Beastmaw Warband and the Coven. The Unseen Vigil too, though not sure about their activity levels these days.
That said, I’d love to see you in Dalaran on Monday! We always post RP invitations on the forums and welcome every friendly adventurer with a green thumb. 
(The event tomorrow is The Dark Side of Botany)