Alright, here are some comments in no particular order, which I hope will be helpful and not confuse you too much
Knives are measured by the length of the blade only; the handle is extra
So, for example, an 8" knife has a blade length of 8", but the total overall length will be about 13"
Imperial or Metric? Both may be used, but Metric is becoming more common
As mentioned, I don't recommend getting a set
One of my hobbies is leatherwork, and I have a friend who does small scale sculpture, and it's the same with those - a set will have things you don't want, and you will find you need things it doesn't have
Many sets are aimed at students & trainee chefs, who will be expected to cover most aspects of cookery. Thus they will have things like a boning knife and a fish filleting knife
Unless you intend doing serious meat or fish preparation, you'll probably never use them
More advanced sets might include things like a turning - paring knife or a dough knife, which are similarly a waste of money for most people
A cleaver is only needed if you're chopping bones or large vegetables
A slicer or carving knife is only needed if you're carving large joints of meat
Consider getting a small set of about 2 or 3 of the most common knives, and others as individuals. Then you can add more in the future if you wish
Cost is as good a guide to quality as any
Don't be afraid of the suppliers - after all, they know their stock, and it is in their interests to help you. So phone them up and ask their advice
Whether you buy a set or individual knives, you should be able to feel and handle them before you buy
For example, Global are excellent knives, but I don't like them
That said, if you do buy unseen, the classic western or Sabatier style handle suits most people
Search YouTube for choosing chef's knifes, and similar headings; then you will see the sorts ot things that are available, and suggested
Get a decent chopping board that's plenty big enough; wood or plastic, definitely not glass!
Students usually buy a set in a roll or a case so they can carry them to & from home, work, & college
If you want a set and will only use them at home, consider a knife block set. But it takes up space on your bench, and adds to the cost
I use a magnetic knife rack on the wall
You can manage with two knives, and I think the eight you were thinking of is a bit excessive, so somewhere in between is most likely
Besides knives, there are a couple of related items you might need, so here is my shopping list -
A Y peeler; make sure you get a Y peeler and not a julienne cutter
Kitchen scissors
A sharpening steel
A 3 or 4" peeling knife
A 4 to 5" chef's knife
A 6" chef's knife
An 8" chef's knife
You can get 10" chef's knives but they're only really necessary if you intend cutting things like large cabbages or watermelons
A bread knife, but you can manage with your chef's knife
A 6" or 8" santoku knife is useful. The traditional Japanese knife handle is straight & plain, but most knife makers now have a santoku in their range, so you can get them with shaped/moulded western style handles
Have a look at these suppliers -
www.nisbets.co.uk
www.mychefknives.co.uk
www.kitchenknives.co.uk
And these makes - Procook; Sabatier; Wusthoff; Henkels/Zwilling; Gustaf Emil Ern, but there are many others