The trackpad isn't a patch on the macs but I'm slowly adjusting to it.
Nipple is the way forward!!

The trackpad isn't a patch on the macs but I'm slowly adjusting to it.
Nipple is the way forward!!It's the reason the only laptop I'll consider is a ThinkPad.
1) Yes, its a bit saving. Not sure I can recommend a supplier other than say OCUK sell suitable ram
You want DDR3, SODIMM (Laptop form factor), 1333
It'll be cheaper to buy your own components later, be that RAM or SSD. I've yet to find a supplier where that isn't the case - but lenovo don't want a huuggeely unreasonable premium (Certainly not as bad as apple!)
2)
Its a thinkpad, full service manuals are available. Which is frankly what you should get from every other supplier too IMHO.
http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/0a96013.pdf
RAM is one hatch on the bottom, but if you've got no experience at all then perhaps you might be more comfortable getting lenovo to custom build.
Re other questions, the i3 is generally a lot quicker than the AMD. And nipples are great.
Certainly if you stuff it up, but I don't believe there are any warranty void stickers.
As I say, if you're not confident, just pay a few extra pounds for lenovo to do it, their prices aren't awful
Just wish I could use my Intel WiFi card (I normally use an Intel 5300 card in my laptops - but the Lenovo won't boot with it in)
I only keep laptops for ~6 months so I'm not buying another card when I have a perfectly good one sitting on my desk...Your easiest option will probably be just to buy another card which has been stripped from another lenovo. As long as the PCI ID is correct then its not too model specific.
Theres been a lot of talk about problems putting in different HDD's / SSD's due to the 7mm limit.
At work recently, a guy offered me an SSD for £65 - I'm not really that clued up on them, but it seemed like a good deal so I thought i'd take the chance and try it in the x121e.
Did void the warranty on the SSD - but I can always put it back together if I get another laptop and use it in that still.
With an SSD & 8GB of RAM it's pretty quick... just wish I could use my Intel WiFi card (I normally use an Intel 5300 card in my laptops - but the Lenovo won't boot with it in)
The SSD's "case" doesn't act as a heatsink - the SSD sits on a foam pad, there is no sort of thermal conduction between the chips and the caseso er newspaper which is quite flammable in a confined laptop whilst removing any sort of cooling the SSD housing offers to those memory chips.....i know i know they don't run that hot but still
you sir are a braver man than most.
and also a cheap skate, you could have got some heat resistant material or pad to use