Hello and welcome! Just do a shout in town asking for a pearl to MogHouse and someone will hook you up. I can also run a pearl out to you if needed. As to the discord, et al., I'm not aware of anything.
Fair warning, it can be a little tougher to find groups as whm in dunes because a lot of people have power levelers there. Just sick with it or start your own group. Occasionally, someone with a PL may still invite you even. Is recommend leveling BLM first to get your subjob for that reason.
BLM is always in demand.