I am certainly no expert, I have been teaching for 10 years, and have subbed myself years ago.
I've seen subs complain that it's hard to get into a district, new teachers etc.
Where I live there is a glut of teachers and still a sluggish economy. Until it becomes a "buyers market" it is incredibly competitive. meaning?
A General Ed elementary certification will get you an aide position, not kidding. If I were just graduating collage, I would start looking into getting a long term substitute teaching assignment then getting additional certifications, ELL, Reading/Literacy etc. We just hired a 1st grade teacher and we had 400 applicants, we interviewed 5, then we hired the one that was working on her reading endorsement/reading teacher. She had worked in an intercity school to get experience, been an aide which qualified her to get into a grad program. Sorry for the bad news

But I thought I would share.