watch rama's video if you don't know what they're talking about.
http://youtube.com/watch?v=_TvBPg8NkaM
or practice like this:
solve ur first F2L pair half way, stop, w/o turning the cube and look for the next pair, complete the first pair, do the 2nd pair half way, and look for the 3rd pair, finish 2nd pair, and solve the 3rd pair half way, and look for fourth pair. solve the 4th pair as fast as u can, because there's no way to look for OLL, unless u use MGLS. and then finish PLL as fast as you can.
i read that somewhere and haven't really tried it myself, because:
1. i already try to look ahead.
2. i avg sub 30, around 27/28
but i'll try it when i have time to get more fluent with F2L as my F2L still takes too long. (F2L w/cross takes me about 14-18 secs) 2/3 look OLL takes me like 4-8, and PLL takes me 4.
u should easily break the 35 sec barrier.
good luck