If you purchased the digital download, in the folder that the game installed itself to (probably C

Program Files\Sports Interactive\Football Manager 2008\ ) there should be a couple of manuals in different languages in .pdf format. Also, you will definitely be able to train Bojan and Dos Santos into great players, they always seem to turn out well and are already on your team.
I develop tactics by setting a formation and team instructions (width,tempo,creative freedom) that I think will fit the players I already have, then setting individual instructions for mentality and closing down to suit those positions, then watch the preseason friendlys in full (though on a fast pace) to tweak settings by watching where my team is going wrong.
My Barcelona side currently plays a high tempo that is according to the game a 2-2-2-3-1, but is really 4-3-3.
GK: Valdes
WBR: Zambrotta
WBL: Abidal
DC: Puyol
DC: Milito
CM: Iniesta
CM: Xavi
AML:Messi
AMC

eco
AMR:Ronaldinho
FC: Henry/Eto'o