I have an 87 now and it's nice, but I got through my electronics classes with a very cheap multimeter that didn't measure microamps. I used resistors to find my current, by taking the voltage across them. Still not ideal, but you'll find accuracy is not as important as knowing what you're doing in a university lab. I've been amazed at the grades I got for failed projects simply for thoroughly documenting what went wrong, why and what could be done to fix the situation.