You'll need some sort of press, but it doesn't have to be fancy. If you have a bench vice that opens far enough, that'll do, or you can buy some threaded rod, washers and nuts, and use that.

Three things to know

1- press cups one at a time, the cone shaped cup (usually the upper) first
2- protect the frame and cup with jaw covers, some wood blocks, or an old belt so the serrated jaws don't damage anything
3- when pressing in the cop shaped cup, don't press it by the lip. stack some washers inside, avoiding the ball track, so you're pressing directly over the area entering the frame. Otherwise you can crack the cup.

So it's up yo you whether you want to got it alone, or visit a bike shop.

All the above assumes the frame is properly prepped to accept the cups. With carbon frames, it better be because nobody's equipped to prep them. If it's a steel or aluminum head tube, you need to decide if it's OK to accept the cups, or you can ask the seller if it's been prepped. (I know some lie but if they would lie about that what about everything else)

If you have any doubt about the job, let a dealer do it for you, it isn't an expensive job. Don't forget to bring the fork along to have the crown race fitted.