you will be fine... things are a little diffrent and take some getting used too but im sure you will be fine.
Setting up the network is easy... Prefrences network and walla it does its thing...
Browsing the network is fairly easy... Finder, Network, Windows network or workgorup, then whichever computer has the shared folder active will pop up. Its easier to go from the mac to a pc as far as sharing... it can be done the other way but its a bit more involved.
Printers are kind of like XP it comes preloaded with quite a few printer drivers and most manufacturers will support the mac platform so getting the drivers shouldnt be a big deal either.