A Top11 guidebook says left corner kick use left foot player!!?

[4am]

Since I'm left footed, I would take much better corners from the left side because the ball would curve away from the goal, which allows someone to head it in. If I curve from the right corner, the ball goes towards the goal and makes it much harder to head.

Neither is better than the other Kevin, both have their advantages (and disadvantages). It really depends on a combination of tactical choice/type of players available/personal preference.

I would expect the opposite for free kicks. If the ball is on the right, it is easier to kick it in with the left foot.

Again, it depends what type of delivery you're after. If you want to float one across the box eg. for players running from deep, use a left-footer to take one from the left (and vice-versa). If you want to drill one towards the far post, do the opposite.

My personal preference is the latter - aim for the goal because even if it misses everyone, you still have a chance of getting lucky.

Apologies for straying off topic.