Here you have all the positions for the major scale in 
the guitar; we磍l take as example A major scale, but you 
can play them on any other key just moving the 
positions. Also I磛e included some exercises that you 
can (and should) use with every one of the six 
positions until you know them perfectly.

In position One you磍l begin with your 4th finger (pinky); 
in position Two, with your 2nd (heart); and in position 
Three, with your 1st (index).

Numbers over the notes mean the finger of your left 
hand you have to use in this note (from 1= index to 4= 
pinky). Notes with a "k" over them are tonics (A in this 
example). Repetition bars are there to separate 
sections.

For exercises we磍l use 6th String 2nd position, but 
you can (and should) make them in all positions until 
you learn them perfectly, slow in the firsts times (as 
slow as you need, you can slow down the tempo, but 
it磗 important to keep a constant tempo through the 
whole scale to get the best precision) and getting 
faster little by little (don磘 worry, time + practise will bring 
finger agility). You can also try to invert them (I磛e 
written the exercises in "up to down" way, but you can 
(and should) do them, the same, from "down to up" 
too). Don磘 forget practise exercises in all positions.

With time I磍l may add more scales, so keep looking if 
you磖e interested ;)

Hope it helps you.