For those who haven't played here's the basics.
You choose an entire team then from this team each week you choose 17 (13 on field and 4 reserves). All 17 players earn points.
From the 13 on the field you choose a captain and a vice captain. Your captain earns double points. If your captain doesn't play then your vice captain earns double points.
If any single player of your 17 doesn't play then in his place you receive the score of the lowest scoring player that you have but didn't select.
After each player plays 3 initial games he either goes up or down in price depending on his average score. After this the players price changes each time he plays. If you pick good rookies and use your trades wisely (limited trades) you will have enough money to buy the big guns for the late season/finals.
Realistically you will think you have the perfect strategy then half your team will get injured and you will realise you're approaching the finals with no trades and a team of 11 rookies and no subs and you will curse the supercoach Gods for ever giving you this stupid game!
...have fun.