There are almost no laptops sold with SSD drives as standard, and those that do come with SSDs tend to come with small, no-name (i.e. slow) SSD drives in them. Given that this is the single biggest improvement you can make to a PC, it's really worth thinking about putting an aftermarket one in.
It is usually pretty easy to replace the existing HDD with an SSD, assuming that your computer is compatible and the SSD drive fits (the spec of your particular model should give the accurate dimensions of the hard drive)
1. Buy the SSD. For example a Samsung 850 EVO 500GB drive, as recommended by Tom's Hardware and others - it's available for under £120 direct from Amazon.
http://www.tomshardware.com/reviews/ssd-recommendation-benchmark,3269.html
2. Buy a USB-to-SATA cable, for example this one.
http://www.amazon.co.uk/dp/B00HJZJI84/?tag=acorn06-21
3. Plug your new drive into one of the laptop's USB ports, and format it (just like you would for any new HDD)
4. Use disk cloning software to copy your entire system HDD to the SSD
5. Take out the HDD and plug the SSD in its place
6. Reboot
That should be about it. I've done it for 5 machines so far with no hiccups.
Of course, if your laptop has 2 drive bays you don't need the cable because you can just stick the SSD in the empty one.
