Hey, first off I'll just say that RockBodom pretty much covered all the angles for developing your style and general playing abiltiy. I'll just add my 2 cents and get outta here. I've found this little exercise pretty useful for developing finger speed and its all based around the classic blues scale so its pretty easy to move about to other positions on the fretboard. I like playing it on the frets I've tabbed just 'cus its easier to reach, but don't be too scared of moving it down to start on the 2nd fret - that way you'll build up your finger span at the same time (so instead of starting 7--10, you'd begin 2--5, etc, etc). Anyway, here goes:
E--7--10-------------------------------------------------------------10-7
A---------7--9--------------------------------------------------9--7-----
D---------------7--9--------------------------------------9--7-----------
G---------------------7--9--------------------------9--7-----------------
B---------------------------7--10------------10--7-----------------------
E----------------------------------7--10--7------------------------------
Hope that helps a bit... Rarrr!
E--7--10-------------------------------------------------------------10-7
A---------7--9--------------------------------------------------9--7-----
D---------------7--9--------------------------------------9--7-----------
G---------------------7--9--------------------------9--7-----------------
B---------------------------7--10------------10--7-----------------------
E----------------------------------7--10--7------------------------------
Hope that helps a bit... Rarrr!