first..go to the menu..to options..and select easy level if you haven't done that already.

second..keep a very close eye on your villagers, and keep taking them back to the research table even when they're worried.

third..keep a close eye out for as many mushrooms as you can find and have your children pick them. these have saved many a tribe from starvation.

if you want anything more specific..feel free to pm me.