What a workhorse of a card. Previous reviews have hit on some great points, I'd just like to add a little of my own experience using this with Hayley Kaplan: Universal Scholar. As many people know, triggering Hayley's ability on your opponents turn is a powerful way to double down on her speed. There are plenty of ways to do that; Clone Chip, Self-modifying Code, Artist Colony, Street Peddler to name a few. Oh, and of course, Personal Workshop.
A popular strategy with Hayley is to stuff your deck full of 0 cost resources, programs, and to a lesser extent, hardware. If you aren't getting any value of these investments you can always sell them to Aesop. 0 cost programs and hardware do not work with Personal Workshop though, so we need to move up in cost. Luckily that is right where we we find some of the most useful Shaper (and often imported) tools. Clone Chip, Hyperdriver, Astrolabe, NetChip, Cache, Datasucker, and many more. Sticking these on the workshop will allow you to pull them off for free on your turn, or spend a credit on your opponent's turn so that you can maximize Hayley's ability.
So you are gaining some clicks, and saving some credits. Not to mention Personal Workshops usual utility goodness of taking stuff off when you need it, such as mid run (Parasite, Atman) or when the corp wants to fast advance (#Clot). That's all great, but if you really want to maximize your workshops, try throwing Technical Writer into your deck as well. You know those games where you start out with a Writer or two in you hand? By mid-game they are exploding with credits. Well, Personal Workshop lets you have those kind of games a lot more often. You can load up your Workshops and then wait until you've found a few Technical Writers. Stall by taking counters off your big things and leave everything else at one counter. Then you choose whether to unload everything at once and then recoup your losses with a Writer, or you can slowly take everything off and save more credits over the long term.
Altogether this makes for an incredible economy engine. Throw in some Diesel and Hyperdrivers and it sets up quickly too. I highly recommend Aesop's Pawnshop with this economy package. With Aesop's and Personal Workshop powering your game you can make some huge tempo plays (Hyperdriver on NetChip anyone?) and then get rich by selling off anything left over. Have fun!