I am looking forward to the full review of COT. A lot of people seem to enjoy the software.
Ever used Chess Opening Trainer?
For now I have downloaded the 7 days trial and created one book using one of the PGN from Valeri - so far so good! Will post something more later this week!
Andrea, Here is another tool that looks ok (and free!)
http://www.chesspositiontrainer.com/English/Chess-Opening-Software.aspx
No, that's a new one to me. I've used Chess Opening Wizard (the most popular commercial product) and Chess Position Trainer (free). I generally focus on understanding but I use these to refresh my memory a day or two before big tournaments.
Man, you rock - this seems 10 times better than the previous one, plus it's free! 
Tonight (hoping my daughter will fall asleep soon enough) I will give it a try and report back.
Thanks again!
I will check out the new software but I have used COT for a while. I like to use Chessbase and create a set that I want to learn. i.e. the Vienna. I collect them, export the pgn, then import into COT. It then allows me to practice the openings and common variations for what ever # of moves I want. I generally use 10 as a start.
I will let you know what I think about the other one shortly.
Yesterday night I have been playing a bit with Chess Opening Trainer, the freeware tool proposed by Farbror.
First feedback is extremely positive: it has a very neat interface, very powerful options and the training options just rock, in my opinion.
Definitely worth a look!
Thanks again for the tip, Farbror!
Andrea
Hi all! Do you have any experience with Chess Opening Trainer ?
This application looks pretty cool, because it lets you create your own opening books. Given you can import from PGN files, I was planning to use the excellent PGNs that my coach is giving me to create the books and practice them.
I know that it is key to learn the concept behind the moves in the opening (which is what I am doing), but some practice cannot harm, right?
Any thoughts?
Thanks in advance,
Andrea