I need a little information on finding memory addresses

I know I'll get the "JESAUCE USE GOOGLE YOU TOOL" but honestly there ain't much help to find on Google, related to this.

So I'm wanting to make a game trainer (as mentioned in my signature)
But the problem I'm facing is finding the right addresses. I know games are using dynamic Addresses but how do i find the health address, ammo, etc.

I've used the all-around Increase - Decrease method, in the game: BF play4free, but it doesn't return anything useful. Also, the Datatypes being used to store like health data, etc...They're just regular 4 bytes, int's right?

When i look at the graphical design of the ammo value in the game it shows 4/16(playing a recon)..Not sure if that means it's a double or whatever...Hmm..Please do help ^^

Ammo, and health on a multiplayer game is normally stored on the server in which case when you change the value it will reset even if you freeze it. No sense trying to change ammo and health. Try changing coords,
1. Search unknown initial value
2. Move your character couple feet
3. Search increased value
4. Repeat until you get around 1-30 addresses
5. Pick out the addresses that change when you move
6. Try editing those or using assembly to make a jump loop or something