I remember back on my original character (a Night Elf rogue) when this guy paid me 5g to sign his guild charter. It was AMAZING to me. The most money I had ever had back then was somewhere in the region of 10s. I rationed it out and everything. That 5g lasted me weeks.
I also remember almost ragequitting when I found out my level 3 rogue couldn't dual-wield. When I saw it in the trainer, I was amazingly happy.
Back when i started my DK, i signed up for one of those 5-DK Ramparts runs as a healer because I thought we could use Death Coil to heal other DKs. We learned otherwise pretty fast.