does adjusting the router's position about an inch or adjusting the direction of the antenna affect my laptops browsing speed?
It can indeed. Moreover, adjusting your router position actually increases or decreases your wireless signal. Your wireless signal strength has a large bearing on your browsing speed. However, an inch or two should make little to no difference. But dont rule it out.
Not so much. But moving it away from other electrical equipment will make the signal travel farther. Also keep it as far from the cordless phone and things like that. Other digital devices, and concrete/brick walls really break it down. If you are connected to the access point at even a fair signal, you will probably be using all your internet connection speeds' bandwidth. Having a better signal wont make it faster, unless it is actually disconnecting on you.