Welcome to the forum Ramon, it's good to have you aboard! That's a sweet cutaway you got there.
+1 to Gordon's 'how little tension can i use to open this lock' practice method. This will help you immensely and I often find myself going back to this exercise every so often. It really pays off once you move on to more difficult locks.
As for handcuffs: you can buy a cheap pair or an expensive pair- both should be easy to open either by shimming the jaw or unlocking them with a paperclip, bobby pin, rai bogota hook (id reccommend using the titanium one unless you know what you're doing and are very light-handed) or even a disposable pen with the right cuts. I've opened mine with all of the tools I mentioned. I bought a pair of cuffs to add to my lock collection not long ago in hopes that one day I might find myself abducted and thrown into a post apocalyptic dungeon and will possess the knowledge to free myself and lead my fellow captives to freedom. I don't really hope that this happens but you get the idea hehe..
In all seriousness though, I've had a lot of fun handcuffing myself in uncomfortable positions/to different objects around my home with nothing but a bobby pin and tiny discreet shim hidden on my person to see how quickly and quietly I can escape the cuffs. Lots of challenging fun to be had there. And of course, crazy sex addict women will help you put them to good use as well
Amazon has some really cheap ones and they have expensive ones as well. Here are some cheap ones..great for practice and theyre double locking:
http://www.amazon.com/MTECH-USA-MT-S450 ... =handcuffs
These will give you a bit more trouble but still quite easy to open with enough practice:
http://www.axon.ae/chubb-prison-a-deten ... cuffs-1k52
And then of course the medeco cuffs are a whole different ballgame which I have no experience with...yet
edit: I have many "beginner" type locks I'd be willing to trade, perhaps even donate a few if you'd be willing to pay the shipping charges. It's always nice to see a new member with the passion for picking you seem to have. And since much of my post was about handcuffs lemme end this post with a quote from Bosnian Bill: "keep it legal, keep it safe"
Tiger got to hunt, bird got to fly; Man got to sit and wonder, 'Why, why, why?' Tiger got to sleep, bird got to land; Man got to tell himself he understand.