I'd recommend primarily looking at a card's effect rather than it's type. If I'm considering Medium, I'm not looking for -a- program but a way to access multiple cards and my alternatives would be R&D Interface (hardware) or Maker's Eye (event), not another program. That being said, here's how I'd go about building a fairly standard deck:
I usually run 2 of each type of breaker (fracter, decoder, killer). If you want to increase the odds of drawing into them you can go with 3 but as long as a breaker is installed you're obviously not using any copies you may have and the slots could be used for other cards.
Then you need something that lets you gain credits more efficiently than one per click. Sure Gamble seems to be something of an auto-include for a lot of people, and it's great, but you'll also want something that costs less for when you're broke. Also, having a mix of burst- and sustained income is a good idea.
Third, include something that lets you get the cards you need (again, more efficiently than drawing through your deck one by one). You can play something that draws several cards at once (which has the added upside of your hand doubling as your hitpoints), something that lets you look at a few cards and select one or a tutor that allows you to search for a specific card.
Round that out with some utility cards to make your runs more profitable or easier, to make things you're doing anyway more efficient or to make the game harder for the corporation and I feel you should have a functional deck.
If that seems a bit broad 1) I'll gladly try to illustrate my points using my own decklist if that helps but more importantly, 2) it's because there are tons of completely different decks. I've seen people play (and do well with) everything from 3 of each breaker in a 40 card deck to just Crypsis. I don't think anyone plays a deck without any breakers, but I have seen people play games without installing any.
Edited by AmtsboteHannes, 27 May 2014 - 03:27 PM.