I am deciding to write these guides for people who are new to competitive battling or just need a helping hand smile

First I am going to talk about Evs natures. I am assuming that you already know what they are and this part is going to be how to invest them. Of course you get 510 evs and you can max invest 255 in a stat tho you only invest 252 as the extra 3 are useless. leaving 4 evs for anything. How you use those evs depends on what type of role your poke is taking. It is best most of the time to keep your evs in 252

roles:

wall:
MAX HP!!!!!!!
it is the same as putting 252 into both defenses
then generally you put 252 into the defense you want to wall
4 into what ever
bold/impish/calm/careful

attacker:
252 into what ever attack you specialize in
252 into speed
4 generally in hp
timid/jolly

bulky attacker:
only run if defense and/or hp is good enought and/or you are to slow to bother with speed. Great example of this is conkeldurr, hitmontop and scizor
252 hp
252 into what ever attak you specialize in
4 to what ever
adamant/modest

set up pokes:

Curse/bulk up:
generally
252 hp
252 special defense
4 attack
adamant/careful

dragon dance:
252 speed
252 attack
4 hp
jolly

bulky DD:
252 hp
252 attack
4 speed
adamant

They are most of the general ev spreads most others are to situational to go into like mixed attacker and calm mind >.< there are probably ones I have missed and there are exceptions but these are generally rules. I will get the next one up soon (it won't be as basic) or an extension of this one