[SDL] Q about speed

[Jan Kratochvil]

Hi,
 i want to make my own simple sprite engine.And of course i need to make
it fast. The question. How should i blit to make it as fast as it can?
Make temporary drawing surface and blit it? Or blit it direct to screen
and call flip? Pls help.
And another question is about timer. Can someone tell me how to define
timer function and how to send parametrs to it? Please can u send litle
example?
Thanks Jan Kratochvil