Started with default, made a team out of them(basically selling all default players and buying huge talents and some arrived players with experience).
Started off before season one by selling most expensive players and choosing Rooney and Sneijder to replace them. Became 2nd in Division 2, so I got promotion to 1st division. Rooney developed to be very good(for example, he now has 99 shot tech, and other stats almost all in red and yellow parts).
My advice would be that you buy big talents, that develop quickly. We have a thread about young talents in the ML,I suggest you look that up if you want to.