finger stretching will come on its own... just start with basic left hand and right hand exercises..... remember always use alternate picking for whatever u play(in songs)...
u should be able to do this blind...!!
1) simple down picking (frm E to e)
2) simple upwards picking ( frm e to E)
3) above 2 exercises with alternate picking
4) alternate string picking (E to e)
5) alternate string picking (e to E)
there are lots more... try these for a start....
dont concentrate only on chords.. coz ul end up regretting it.. im good at chords but leads need a lotta improvement so give equal importance to both chords n leads... all the best....