Hi Aaron.
First, as regards money. The easiest thing is to organize yourself. Unfortunately the cash test devices that Nin and Sean were talking about aren't available in the Uk (thank the Rnib), (my lady described using them when she lived in Germany for Euroes). however, as Brad said, the notes are different sizes, fives the smallest, tens larger, twenties larger still.
If you get your own cash from the bank or cash back at a supermarket, you can make certain to get denominations that you know. Personally I only ever use tens if I can help it, even if I'm getting out a hundred pounds or so, that way I only have fives and tens to deal with, though I do know what a twenty looks like for the occasions that I can't get tens.
As to cards, I use a credit card on the internet precisely because! if someone hacked my computer they couldn't charge too much from my account. I do have the credit carde number written down. For my debit card I usually sign when I'm out shopping rather than use the pin sinse if you make a mistake with the pin machine (which can have different screens and configurations), you can be in trouble. Apparently speaking pin machines and cashpoints that take headphones do exist, but I've not seen any yet and they're not universal enough to rely on, so I prefer personally to just sign (my print signature is illegible, but also unforgeable).
I have my bank details on stickers attached to my desk which I can read with my pen friend labeller, which is useful for phoning the bank and getting updates and also secure.
As to living skills type of stuff. Most things I found I needed to know were things I had to do when i moved in at university, sinse though meals were provided, many other things like laundry needed doing myself. Actually these days I prefer taking care of myself and living independently, indeed currently I'm living with my lady which would be near impossible if I didn't know a little about cooking etc.
When living with your parents it's a little difficult to practice things, but it's important to know for when you move out. For a start I'd recommend getting a liquid level indicator (from the rnib), and making hot drinks. Even if you don't drink tea or coffee that much, it's a useful thing to know as you can get used to things like pouring hot liquids. USing a microwave to heat food up is also worth knowing (when I lived in colidge and they weren't serving meals during my masters, I basically had to live on what I could microwave).
The george forman is also a handy thing, I'm also a fan of the slow cooker as well albeit I didn't start using one of those to make chilly and stew etc until later.
A lot of independence type stuff happens automatically when you start living on your own sinse you physically have! to organize your kitchin, wash up etc just for comfort, and while you can practice a few of the useful skills at home such as cleaning and washing up, there's no substitute for just having your own space and having to do it.
If your not actually going to university, I'd suggest perhaps looking into either being on your own for several weekends at your parents where you will have! to feed yourself and clean up, or perhaps going away to a holliday flat for a couple of days, perhaps having a friend round.
Btw, At the moment there is myself and the uture mrs. Dark living together with two guide dogs in my flat, something which definitely wouldn't! have been possible without learning how to take care of my own space, so there are distinct advantages to this.
Any questions, let me know.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)