Gear help...
 

I'm just wondering...I have bought a road bike, I don't know the gears as of yet, however I read it has around 24gears. So I was wondering how difficult, an expensive it would be to change it all to a 14-16speed road bike? The whole spec for the bike is:
BTWIN Sport 1

If there were only one bike, it would be this one Features
Power transmission / Propulsion : Aluminium frame for excellent energy transfer.
Efficiency : 27 speeds, controlled from the handlebars, to manage all gradients.
Rigidity : Integrated aluminium head tube for stiffness and precision.
Easy adjustment : Fully adjustable using Allen keys.
Composition : 6061 T6 aluminium frame (8 tubes) with an integrated head tube for superior rigidity (this model). Cr-Mo steel fork. Aluminium handlebars, stem and seatpost. Royal Viper saddle. OUNCE chainset with 50X39X30 triple chainring and crank length suited to the size of the bike. Shimano 2200 series shifters and derailleurs. 3 X 8 gears. 12x25 cassette, KMC chain. Aluminium double pivot brake calipers. Hutchinson tyres and inner tubes, aluminium double wall rims. Standard pedals. Weight: 10.9kg (size 57 with pedals).

It's very easy, just don't use the gears you don't need.

I don't mean to be facetious, but I'm not sure what your objective is. If you simply don't expect to use the low end of the gear range, the innermost chainring (granny) can be removed easily enough (Removing the innermost ring would require removing the crank first) and the front derailleur adjusted accordingly. Or you can leave it in place and simply adjust the FD so it can't be used.

As I said, I don't understand what you hope to achieve, but seeing as you're fairly new to this (based on the question) I suggest you ride it as is until you have a sense of which gears you actually use, then you can make modifications to suit your needs, if required.

I guess that is as simple as it gets. Thanks.

It's not that hard.

Think of your bike as having 3 gear ranges that correspond to the front sprockets. The smallest front sprocket is for uphills. The middle sprocket is for flat roads. The biggest front sprocket is for downhills.

Within those three gear ranges, use the rear sprockets to fine tune your peddling effort and leg speed.