A tutorial is available on the site. Here's another colour map that I use for lineup editing. This is my England squad to the West Indies and my custom lineups:
Squad (in red)
DC 60 (Vaughan) 13 2F (Anderson) 10 3B (Gough) 47 21 (Butcher) B5 6D (Clarke) 8E 1E (Collingwood) 4F 64 (Flintoff) 2E 50 (Giles) 34 0F (Harmison) D8 1A (Hussain) 14 0F (Hoggard) DB 28 (Caddick) F6 40 (Read) 98 09 (Johnson) D8 5E (Trescothick) B7 1C (Thorpe) 8F 60 (Blackwell) DB 12 (Jones) 41 74 (Kirtley) 1E 7B (Strauss)
Captain (in green)
DC 60 (Vaughan)
Test Lineup 1,2,3 (in blue)
DC 60 (Vaughan) D8 5E (Trescothick) 47 21 (Butcher) D8 1A (Hussain) B7 1C (Thorpe) 4F 64 (Flintoff) F6 40 (Read) 8F 60 (Blackwell) 34 0F (Anderson) DB 12 (Jones) 13 2F (Harmison)
Test bowling lineup 1,2,3 (in purple)
34 0F (Anderson) DB 12 (Jones) 13 2F (Harmison) 8F 60 (Blackwell) 4F 64 (Flintoff) DC 60 (Vaughan)
ODI lineup 1,2 (in yellow)
1E 7B (Strauss) D8 5E (Trescothick) DC 60 (Vaughan) D8 1A (Hussain) 4F 64 (Flintoff) 8E 1E (Collingwood) F6 40 (Read) 8F 60 (Blackwell) 10 3B (Gough) 41 74 (Kirtley) 34 0F (Harmison)
ODI bowling lineup (in orange)
10 3B (Gough) 34 0F (Harmison) 41 74 (Kirtley) 4F 64 (Flintoff) 8F 60 (Blackwell) 8E 1E (Collingwood)
All my lineups are set the same for simplicity but, as c2k2, it's possible to set different defaults (Test 3 and ODI 2 are for spinners wickets). It's also possible to make mistakes hence Hussain is in my ODI team in this screenshot rather than Thorpe.
Any questions about the editor post them here, any questions about the team selection post them
here