Chessbase just released a new Fritz Trainer by GM Henrik Danielsen which focuses on double d-pawn London systems.
http://www.chessbase-shop.com/en/products/danielsen_london_systemI'm currently trying to create a d-pawn speacials repertoire with 1.d4 (Neo-London against 1...d5, Torre and Barry against 1...Nf6). So as you can imagine I was very pleased when I see a chessbase product that fits perfectly into my crappy repertoire.
First of all I think 60 minutes is not enough to explain any opening system. So if anyone interested taking up 1.d4 d5 London I suggest finding a copy of Win With The London System
http://www.amazon.com/Win-London-System-Sverre-Johnsen/dp/1904600352/ref=sr_1_3?... and analyse first 12 illustrative games as a starting point. This is the most through way to get an understanding of the thematical ideas.
The most important chapter of Danielsen work is the last (it's about 20 minutes) which he analyses an early c5 by Black where he does not commit himself with e7-e6 (a move that blocks his light square bishop's prospects).
Gm Prie is pessimistic about White's chances in this position as far as i understand:
Gm Daielsen suggests a completely different approach
I tested 1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 Bf5 system in a correspondence game myself and found resulting positions a little bit depressing for White. Maybe giving up the hope to transpose into more conventional lines and following Danielsen's advice is the way to go.
Conclusion: Not ideal if you're a complete stranger to the London system. But it contains some original ideas of the author who started to employ this opening himself lately.