Personally, I'd look for properties that are cheap for the location/size, not properties that are run down.
I went to an MLS listed house here in Calgary during the depths of the recession that was listed for 160,000. It was gutted down to the studs, and needed a complete renovation. That's work we could do, so we went and had a look. We estimated a post reno sale price of $220k, 10k in selling costs, a 20k reno budget (materials and a few trades, doing most of the work and contracting it ourselves, based on 3 recent reno projects, so it was a good estimate), and a 25k buffer to cover carrying costs, contingency, and my profit. So we were prepared to offer 165k. The property sold for $225k, after a steady stream of people in toolbelts came through to look at it. So even though it was run down, it wasn't a deal.
In a similar fashion, I made an offer on a run down condo of 160, and lost out to another bidder. Now the condo is back on the market (9 months later), totally renovated, and its been price reduced down to 180. Do you think either of these people made money?
If you find something that is well under its value, and its in good shape, why wouldn't you buy it? The goal isn't to practice doing renos, its to make money. If you can get the same discount without doing the reno, spend a weekend in Banff with the reno time/money, and enjoy your profits. If you are going to do a reno, make sure you get a big enough discount.
Regards,
Michael