While undoubtedly there won't be nearly as many players in the levelling areas to readily group up with as there were at launch, guilds have had a chance to establish themselves so you shouldn't have any problem finding a one to WOW Classic Gold suit your needs and offer help and advice as and when it's required.
World of Warcraft Classic has been receiving waves of content updates since launch last year, tying in with the content releases for the original game. It's still unclear if the game will get any 'new' expansions such as The Burning Crusade or Wrath of the Lich King. Blizzard has said it's "not opposed" to adding expansions to the Classic experience but no decision has yet been made.
At the time of writing, WoW Classic is currently on Phase 5 of the PVE content schedule (see below) and the Ahn’Qiraj raid has been unlocked so, once you reach max level, you'll have access to a number of raids and World Bosses to MMOBC tackle.
