+1 for all the input offered here, especially the encouragements to take advanced riding schools and classes.
To answer your first question: yes, keep your head pointed ahead of where you are to where you will be, look as far ahead as you can without sacrificing your awareness of near field events and conditions [See 'wide view' below].
On your question on high beams: I use low beams for day. When passing [both day and night] I cover the high beam switch, in case flashing high beams might make an oncoming vehicle aware of me and discourage them from endangering me. At night I use high beams wherever and as much as I can without blasting the eyes of oncoming traffic.
My best learning experience with visual technique came from Keith Code's California Superbike School [It's also detailed in the books mentioned in previous posts: 'A Twist of the Wrist' and 'A Twist of the Wrist 2']. In their level 2 riding class, CSS focuses on how to improve your visual perception. They use specific drills to help you train your physiology and psychology to best serve your motorcycling.
A primary key to visual skills is always using the wide view described in a previous post by BusyLittleShop. An exercise to play with this concept and develop this perception is to sit in a comfortable chair in your mancave [Or womancave] and look at a fixed object around mid wall height across the room...let's say it's a clock, but it could be a doorknob, etc. [Do not look a TV that is tuned in to motorcycle racing for this exercise]. Without moving your eyes from the clock, shift your attention to a point about 20 degrees to the right. This could be the previously mentioned doorknob, a spot on the wall, a book on a shelf, etc. What you will discover is that while your eyes remain fixed on the clock, you can shift your awareness to other objects within your peripheral view. Practice this with objects above, below, and to either side of the clock. This introduces you to the habit of including much more data in your perception without having to shift the actual focus of your eye off of your target [The clock]. You will find that you can shift your attention from one object to another literally at the speed of thought; much faster than you can move your eyes back and forth. So in this example, the clock is your path of travel, the doorknob is the gravel-covered shoulder of the road, the book high on a shelf is a rider ahead of you, etc.
Once you are comfortable with using a wider view and processing the newly increased data stream, then break a corner down into three key geographic segments: [1] turn-in point, [2] apex, and [3] exit.
Turn-in points
A motorcyclist always uses a turn-in point, because it's impossible to turn unless you begin that turn, and that beginning must occur at some point. But a visually untrained motorcyclist does not often choose a turn-in point. They usually just 'go around the corner'. So to overcome the lazy tendency of not selecting a turn-in point, when approaching every single turn establish a consistent practice of selecting a turn-in point. A turn-in point can be a painted 'XING' on the road, a seam in the pavement, an oil stain large enough be noticeable, a 'deer crossing' sign beside the road, any other reference point at which you decide to begin that turn. Here's a key point: selecting an incorrect turn-in point is better than not selecting one at all. Selecting a turn-in point is taking control of your riding, it's making a definite one-turn-at-a-time decision about where you will begin each and every turn. If when starting out you find you are selecting turn-in points that are too early, then take charge of your riding and consciously move the turn-in points you choose a little later, ie closer to the turn. If you find that you are selecting turn-in points that are too late, reverse the process and consciously choose turn-in points that are earlier, ie further ahead of the turn.
The two-step drill
Once you've locked in the practice of always selecting a turn-in point for each turn, you can begin to develop a conscious, smooth movement of your vision forward. Do this by:
step [1] selecting your turn-in point, say "One" to yourself
step [2] as soon as you are confident that you will hit your turn-in point, say "Two" to yourself, and smoothly sweep your vision forward to the apex
[For street riding purposes, the apex can be loosely defined as the midpoint of the corner, about halfway through]
During this exercise, you say "One" to yourself when you know you will make your turn-in point, and "Two" as you sweep your vision forward to the apex because saying "One" and "Two" builds the sequence into your riding practice and makes sure you choose to consciously take both steps. Deciding you will make your turn-in point needs to happen well before you reach that point. Do not fixate on your turn-in point too long; it is all too easy to watch it go all the way under your wheels, then find your vision adn awareness completely behind your path of travel.
Regarding eye movement, think in terms of smoothly sweeping your eyes, not jumping or darting them from point to point. BusyLittleShop makes this same important recommendation in his previous post. Most importantly, do not dart them backward and forward from far ahead to close in, or vice versa.. Your brain interprets visual information in a steady stream, but when you move your eyes suddenly, your brain pauses its visual input stream to save you from perceiving blurred jumbled visual information gathered as your eye muscles move your eyeballs. You can verify this brain behavior by looking at your eyes in a mirror, then moving them quickly away, to another object or target. Or look at another object and jump your focus from that object to your eyes. You cannot see your eyes move, because your brain is not allowing you to perceive visual information during your actual eye movement. Large chunks of visual information are lost when the brain pauses its input stream while you jump your eyes from one spot to another. The best racers in the world all have 'lazy eyes' - they are rock steady and smoothly sweeping with their eyes. Their gaze is so steady that when recorded on video, it actually looks like their eyes are in slow motion.
I'll save the three-step drill and corner exits for another longwinded diatribe.
Ride safe, always be practicing, seek improvement. Riding better means riding safer.