Will my colours match my screen?

Not exactly. Screens vary. Print is more consistent.

Screens produce colours in Red Green Blue, adding more colour adds light away from black. Print processes use Cyan, Magenta, Blue and black to darken away from white.

The colours available with light (on screens) is wider than in the printing process so things can look duller. To get as close as possible, set your workspace to CMYK. It’s not perfect still but it will give a better idea.