Buying the 1st fish

Robbie,
You do not say if you have bought a Water Testing Kit, if not this must be your primary objective, water may look OK but unless you have the details to hand you will not know for certain when the tank is fully mature and ready for stocking.
Apart from that you are going down the right route, I fear you'll need to wait longer than two weeks for a full cycle to occur, though.
As most everyone had advised try to get hold of some filter contents from someone who has a fully cycled tank, adding some of the 'gunge' from a kind donor's filter to your own will appreciably reduce your cycling (and hence your waiting) time.
Believe me, we all have 'suffered' the waiting time, looking at a tank with no fish is like breaking into a bank and not stealing any money! But, I'm afraid that's the way it is...for your tank to be a safe and trouble-free environment for you future pets you really must 'follow the rules' and rule no.1 is to know the perameters of the water, only by testing it can you know when it is right, hence safe for your new pets.
Most of the sponsors of the Forum will stock Bettas (Siamese Fighters) - but be warned, they aren't really a beginner's fish. I would suggest you start off, very gradually increasing your stock levels over a period of time rather than putting in the full amount of fish you intend to stock all in one go. This is because your newly cycled tank will be just that, a cycled tank - the very moment you start adding livestock and feeding them you increase the 'load' on the fitration bacteria. If overloaded too soon the filter will not be able to cope and the consequences of that can be disastrous.
I have to say it's ever so easy to overfeed your fish too, especially if others in the house 'slip in' food for your fish without your knowing, uneaten food spells disaster! Actually even too much food, even when eaten, can be equally hazardous, a fish can only assimilate a certain amount of the food it eats, the remainder come back out of its 'rear end' as undigested - just as bad, in fact, as that which the fish didn't eat.
So, either buy a Testing Kit, - or if you already have one - use it religiously!!! It can tell you so much about your tank's well-being. As time passes you will learn to be able to watch the behaviour of your fish, letting them 'tell you' by their behaviour how they are, if they're not showing any signs of distress - chances are they're potentially fine, but as I said this comes with experience of watching them - for now the water perameters have to be your guide. But even then, never allow yourself to be fooled int not still using your Test Kit, its importance cannot be overstated!!!
Please keep us informed as the way things are going, and remember there's someone here most of the time to offer some help if it's needed.
Good luck.
John