IMHO If your just going to blatantly copy a board your better off desoldering all the components and scanning or photocopying the board, then your hole spacing

IMHO If your just going to blatantly copy a board your better off desoldering all the components and scanning or photocopying the board, then your hole spacing is layed out too. Otherwise I think it would be better to start with the ICs locate their support components such as pull up resistors or timing caps and you will start to see the groups of electronic components forming circuit blocks similar to how you can see functions and routines in source code. For the example shown it would almost be easier to just google "schematics for a 12v pulse battery charger".