Pentatonic scale
  
E-o-|---|---|-o-|---|-o-|---|-o-|---|---|-o-|---|-o-|---|---|-o-|---|-o-|---|-o-|---|
B-o-|---|---|-o-|---|-o-|---|---|-o-|---|-o-|---|-o-|---|---|-o-|---|-o-|---|---|-o-|
G-o-|---|-o-|---|-o-|---|---|-o-|---|-o-|---|---|-o-|---|-o-|---|-o-|---|---|-o-|---|
D-o-|---|-o-|---|---|-o-|---|-o-|---|-o-|---|---|-o-|---|-o-|---|---|-o-|---|-o-|---|
A-o-|---|-o-|---|---|-o-|---|-o-|---|---|-o-|---|-o-|---|-o-|---|---|-o-|---|-o-|---|
E-o-|---|---|-o-|---|-o-|---|-o-|---|---|-o-|---|-o-|---|---|-o-|---|-o-|---|-o-|---|
      1       3       5       7       9           12          15      17      19


each section is played from low to high the high to low (ascending and descending)
example:
E-------------------------------0--3--3--0------------------------------------------|
B-------------------------0--3--------------3--0------------------------------------|
G-------------------0--2--------------------------2--0------------------------------|
D-------------0--2--------------------------------------2--0------------------------|
A-------0--2--------------------------------------------------2--0------------------|
E-0--3--------------------------------------------------------------3--0------------|

playing this and other scales will greatly improve your skills by increasing your picking 
speed and your finger strength. Also you can spend lots of time just soloing with a scale.
Once you learn these scales youll notice that a lot of songs are built solely off of them 
for example learn Life in the Fast Lane by the Eagles and look back at this scale.