Well...
Pretty much bowling/bating technique means that they work on there bowling actions, batting technique etc.. its good for up and coming bowlers/batsman as it improves them quite a bit if there capable of it.
Same with batting/bowling practice, that just means they work on there bowling/batting if there out of form etc...
For scoring runs and such, what i usually do is, for the first 4-8 overs i see how my batsman are going, if theres played and misses etc... If theres not and my batsman have been in a while, i put my aggression up to 4 bars and keep it there for awhile, then once there fully set i put it 1 bar from full aggression (even if its only in the 20th over) as that is where most batsman play best. Doing this as long as you dont loose wickets every 20-35 runs you should make atleast 265+.
If your loosing wickets or its a seamers/spinners pitch, or its cloudy etc.. let you batsman settle fully before trying to up the runrate, once thats done, put the aggression bar up 2 bars each time untill your 1 bar from full aggression, and keep it there. If there's a bowler thats really tieing down one end, or is taking wickets consistently, see him out and target the other bowler. Do simple things like this.
As for Warne not getting wickets on a spin friendly wicket, dont worry maybe he's just bowling bad.
Hope these have helped!
Goodluck!