I have acquired a bike (new), but from the shop (supermarket), the steering seems to have no effect on the wheels, i thought it was a minor issue i could solve when i got home by tightening, but iv had no luck so far,, , the bolts at the sides are for the handle bar, i tried turning the lock nut (discolored in the pics), but nothing is happening. Im now thinking of taking it to a repair shop, is this the right move?
See the oval thing at the top right of the lower picture? That's a snap-in cover. Pry it out. Underneath, you should see a hex head. You turn this clockwise to tighten the handlebar. What it is is a a long bolt with an expander nut on the other side. The tube (stem) through which it runs is split (or angled) at the bottom. When you tighten the the bolt, it will draw the expander nut into the split tube making it, well expand against the sides of the top of the steerer tube. If it's very loose, you should be able to just pull it up and out of the steerer and see how it works. This is an older style of attaching the fork and handlebar to the bike.