Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
you should have about 7-15 kills and should be doing a lot of damage if you hit a long range spear. If you do not hit long range spears or are close range make sure you use your ultimate. Your ultimate does a lot of damage mid - late game.
You will start doing a fair ammount of damage. By middle game you should have 3-5 kills and not alot of deaths. You should abuse your heal as much as possible so you do not die. You should wind up selling your Dorans ring by 20-30 mins.
Early game you will start with your Q and boots and 3 hp pots so you can farm and stay in lane longer. Nidalee does not start doing alot of damage until level 4 or until you go back to get some AP. You will have to play passive and try not to get cought.