And these are my experiences so far.
The 'old' laptop
Still a bit scared of the transition I decide to try some things first on an old laptop. It's an ACER 2410 Travelmate with a 1 Ghz Intel Celeron and 1 GB memory running Windows XP. The 80 GB harddisk is partitioned in a C an D drive, both 40 GB in size and using FAT32.
First it appears installing Windows8 on a FAT32 disk with just 16 GB free storage is probably not a good idea. The installer just crashed twice without a clue why. So I first joined the two partitions using a partition manager (I used Paragon Partition manager, but there are many). Then I converted the resulting disk to NTFS using the command-line 'convert C: /fs:ntfs '
This finally seemed to solve it and although the installation took nearly three hours it succeeded. And it works fine. I installed some of my 'mission critical' applications (Borland C++Builder 5, Goldmine CRM, Visual Studio 2008) and that all worked fine.
The Work laptop.
This is more modern Toshiba Tecra 10A with a dual core Intel at 2.8 Ghz, 2 GB memory and a 150 GB hard-drive. This drive is using NTFS, but it's also partitioned in a 60 GB and 90 GB section.
As expected the installation is easier here. There are no crashes and it takes somewhere around one and a half hour to complete.
Networking and Domain
Now if you have a work laptop that needs access to a domain take care of that first.
Here is an article on how to connect to a domain. (or the short version on SuperUser).
Then it might be useful to connect your domain account to your Microsoft account.
Viruschecker and security
What I used to do first on any PC is installing Security Essentials. But this is not necessary any more since Windows 8 comes with 'Defender' which is exactly the same. So no need to install additional software for this.
Installations that require .NET 2.0 or 3.5.
Even though Windows 8 comes with .NET 4.5, some software requires .NET 2.0 or 3.5 to be present. It can be installed as described in this MSDN article 'Installing the .NET Framework 3.5 on Windows 8'.
NOTE: Installing a Windows language pack on Windows 8 before installing the .NET Framework 3.5 will cause the .NET Framework 3.5 installation to fail. So since there probably will be lot of .NET 2.0 software around for a while it might be a good idea to just do this for every installation.
Changing the language
One of the nice features of Windows 8 is the ability to switch languages even after you installed it. If you go to 'Control Panel -> Clock, Language and Region -> Language' you can just select another language.
The article Using the language you want by Steven Sinofsky explains it all.
TinyCAD application fails
The only software so far the does not work is TinyCAD , an open source schematics drawing program. It installs fine and runs but when you click File Open or Save it just gives a error:
'Encountered an improper argument'. Everything else works fine, bur if you cannot load or save files it's pretty useless. Selecting 'Windows XP compatibility mode' when running does not solve the problem. I tried to find a solution but nobody has found one yet.So for the time being it just has to run in an Windows XP on Virtual box
The virtual PC software VirtualBox runs very smooth on Windows 8. Since Windows XP mode is no longer included in Windows 8 this is your only chance left if older software fails to run.
Originally my idea was to avoid additional software and just stick as much as possible to the standard installation. Since there is such a nice e-mail tile on the start page I decided to go with that. Unfortunately it apparently does not support the POP3 protocol, so this attempt failed immediately and I had to install Thunderbird. Which works fine...
Matrox DualHead2Go (Multiple monitors)
After using it for a few days I must say I'm impressed. Of course it takes some time to get used to the new interface and all the little differences between XP and 8 but the search function in the charms makes it super easy to find anything you need. And when you are used to it it just works a little faster. Like on my XP machine when it recovered form hibernation it would not reconnect to my companies network. I always first had to log off and log in again to get access to our server. Windows 8 just does this automatically.
When switching my laptop off I always had to remember first to switch the desktop to my laptop screen or else if I switched it on without the external monitor my desktop would sometime still be off screen. Again: no problem on Windows 8. You can connect or disconnect a monitor anytime and the desktop will just restore to the most optimum settings. And with Fences installed all your icons will always be in the right place.
And it definitely pays off to learn some of the Windows-key shortcuts like:
Windows-C : Show the charms
Windows-D : Go to the desktop
Windows-X : show most common administrator settings
Windows-Tab : Switch between apps and desktops (And Alt-Tab of course still works to switch between applications)
Windows-R : Display the 'Run' window
And there are many more as listed here on the 'List of Windows 8 Shortcuts'.