In all statistics combined, you may have a total of 510 Evs. This means you can gain up to 127 points overall. In each individual statistic however, you may only have 255 EVs (Though you will only gain stat points up to 252 EVs). This means you can gain up to 63 extra points, in any given statistic.
A common EV Spread is 252/252/4 (which gives you 63/63/1 extra stat points) however many things are EV'd in a more precise spread to satisfy the requirements needed on that Pokémon.
At the Market in Sunyshore City there is a lady who gives a ribbon to the first pokemon in your party if it is completely EV trained. If your Pokemon can get the ribbon from this lady, it has all 510 EV points filled.
EV's are different from IV's, for an accurate description of how to check and get better IV's please read X-act's breeding guide.
Vitamins are a useful aid in the EV training process, as they can make your training session go by much faster. You will find that vitamins are more useful in training EVs 100 points, or lower.
Last edited by Admin on Sun May 23, 2010 2:06 pm; edited 1 time in total