Hi Please please please can some one help me i have just got this game..

Well if you happen to have and ice type attakc use that on Zapdos, just level up to 20 or higher then bring some Gravelerocks or Spikes. That's basically what I can do for you. Char's emeber and your water gun is good help to beat zapdos.

Well you will want to change your charmander's attacks, to the powerful ones, such as, don't let him use scratch, and let him use ember, and other fire attacks. Seeing as you are a water, and Zapadoes is electric, you will want to stay back and throw gravel Rocks at him. Gravel Rocks, will hit him most of the time, and everytime they do hit him, they will hit 20. You will want to do this with every legendary bird. You can find Gravel Rocks, in all of the lower Dungeons. They come in handy. Good Luck.

If you have a Sleep Seed, that will save you some time to beat it. Make sure you also have plenty of Reviver Seeds. If you're still having trouble, gain levels.

Keep doing rescue missions and when you think you have enough levels beat him.

It be a little late but... Start your game over!!! And TRY to get pikachu as you, and your partner as Mudkip! Ughh I don't wanna explain again like before! Just get pikachu as your leader!!! He levels up fast!!! Mudkip is ground AND Water so he's strong! Then you'll easily beat zapdos with thundershock from pikachu! And mud shot from mudkip! And level them up to about lv. 15 or higher(i suggest lv.20 if you REALLY want to beat zapdos!!!

Train to about at least L:15 and bring Reviver Seeds, because you'll need them!

Lol this works quite well. This works for any boss with powerful fire/electric attacks. Get a Pokemon with flash fire, or Volt Absorb! Examples are Electrike, Manectric, Growlithe and Arcanine.