If you're fresh out of portfolio school and looking for work, take the time to read #The50 Things Every Creative Should Know by Jamie Wieck.
The ones I wish I'd known:
#29 Negotiate
#30 Read contracts
#34 Embrace limitations
#36 Boring problems lead to boring solutions
The ones I wish the juniors whose books I see knew:
#9 Curate your work
#11 Make your work easy to see
#13 Time is precious: Get to the point
#39 Justify your decisions
