Hello, farmhand! The answer to your first question is that it would be almost unthinkable that you would not have heard of Alexander. The answer to your second question depends on whether you are free or enslaved, and whether your particular community is run as a tyranny, oligarchy or democracy. To put it another way, it depends on how much you are involved in the political and military affairs of your area. The higher your status, the more likely it is that his power diminishes your own.

If you are an enslaved farmhand - which were common enough in the Greek world - Alexander's rise to power may not have impressed you much. Outside affairs matter, of course, so you're likely to have heard it on the grapevine; external enemies can offer opportunities for you to run away and gain your freedom. But since Alexander mostly left the political institutions of the Greek world intact (outside of Thebes, anyway), his hegemony won't have touched on your world that much. You may have heard from your workmates or your enslavers about this new foreign king who gets to order Greeks around, but your own life will most likely stay the same. The most serious change that might occur is that your enslaver might be called up to go to Asia with Alexander, which might mean that he stays away for years, and might mean he never comes back. But enslaved farm workers mostly worked under enslaved bayliffs and wouldn't have many direct dealings with the estate owner in person anyway. In the meantime the place will just be run by your enslaver's wife or relatives, or by his heir. Plus ça change.

If you are freeborn and a citizen of your community, things will be different. Greek political communities of this period were highly participatory: that is to say, a very large share of the citizen body was directly involved in running the state. Most states had assemblies and other institutions in which all adult male citizens were represented; many offices and magistracies were selected by lot from all adult male citizens. You might still be too young to take part in all this, but you would look forward to doing so eventually, even if you knew that your life on the farm wouldn't always allow you to go. You would likely be eager to hear the political news from those who were already taking part. Even if your family wasn't keen on politics and mostly kept itself out of public business, you would no doubt be eager to know about anything that might affect your future religious life, tax obligations, and military service. As a farmhand you will not be from a wealthy family, so the reshuffling of elite networks won't be of much concern to you, but there may still be many relevant aspects to a fundamental change in the power relations of the Greek world.

But how much the rise of Alexander affects you personally will depend on what kind of state you live in. The main difference for most Greek states before and after the rise of Macedon was the loss of autonomy, but that didn't mean a complete absorption into the Macedonian state. There was no attempt at political or cultural assimilation. Greek communities usually retained the right to make their own laws, draw up their own constitutions, and manage their own affairs. Internally, things went on mostly as they had before. What changed was that states were no longer able to formulate their own foreign policy. They were obliged to have the same friends and enemies as their hegemon, to pay the tribute he demanded, and to go to war when he called. He could settle any internal or external dispute in his favour, impose governors and garrisons if he did not trust a state to remain loyal, and so on.

In other words, nothing much changed as long as smaller communities did as they were told. Their decisions were now subject to foreign scrutiny and there was a whole category of political choices they were no longer free to make for themselves.

As a result, how much Alexander's supremacy matters to you as a farmhand depends on how much power you could normally expect to wield in your community - because Alexander has taken a chunk of that power away. If your state is run by a tyrant (as many Greek states were), it won't matter all that much, since you won't have been able to decide on your city's policy anyway. Even if there were still citizen assemblies or councils, their role was more advisory, and the tyrant called the shots. In those cases, the fact that the tyrant himself now had to listen to Alexander would only help you to predict what policies the tyrant would unleash.

If you're living in in oligarchy, whether you've lost much power depends on how rich you are. These states tended to be run by the propertied classes If you are working as a farmhand to make a living, it's not likely that you are invited in the halls of power. As such, again, the effect on you is minimal, though you might be amused by the frustration of the rich that they can no longer make you do whatever they want, because they are themselves bound by the Treaty of Corinth.

If your state is a democracy, though - and this was to become the most common Greek form of government after Alexander - the rise of a foreign hegemon directly reduces your own power in your state. As a male citizen in a Greek democracy, you have a vote in every decision your state makes, and the right to speak on any issue that is raised in the Assembly. Epigraphic evidence shows that even the act of speaking in the Athenian Assembly was not monopolised by a wealthy few, but embraced by a broad section of society; most decrees that survive on stone were proposed and amended by people who are otherwise totally obscure. As a democratic citizen, you would expect to be able to decide when and how and against whom your community goes to war. You would also expect to have your say through your allotted share in juries and magistracies. Alexander has taken all this away from you - not by abolishing your democracy, but by severely reducing the range of matters on which it was allowed to have an opinion. As such, you would most certainly have heard of Alexander, and you probably held a pretty low opinion of him.

Beyond this, as noted above, the main difference was that your community now owes tribute and military service to Macedon. This will also affect you, and it is another reason why you would be only too aware of Alexander and his supreme power. Without being able to choose your own enemies, you may be called up one day to fight abroad - to be sent against whomever Alexander doesn't like. Thousands of Greeks would go along to Asia under the terms of the Treaty of Corinth (though many of them served as cavalry and they were likely all drawn from the leisure class). Thousands more were later required to join Alexander there. It was this burden of paying for and serving on foreign adventures - of little interest or benefit to the small communities of Old Greece - that would prompt many Greek revolts against Alexander and his successors. The ability to have their own foreign policy was worth so much to the Greeks that the "freedom of the Greeks" became a peerless political slogan of the centuries that followed.