Noting is simple and powerful, and it's okay to dive in if you are ready. The nice thing about noting is it takes you where you need to go. Something really amazing about the mind sort of points the way. The main challenge is that you must get used to (over time) being on the level of direct experience rather than interpreted experience. The more intimately you can be in experience, the more likely the experiences leading to legitimate insights into the nature of experience happen. The more abstracted and intellectualized the relationship with experience, the more likely experience will be shallow and the insights will be somewhat abstracted or intellectualized. This is a whole different domain than philosophy or therapy.
 
The idealized 1+ hour version of a good noting session is:

1. Let mind get settled into practice mode, slowly letting day's thoughts get replaced with the intention to practice.

2. Let the body get settled. Sit. Rock left and right and forward and backward until you find the place of a stable upright spine. Move your head around until it is centered on your shoulders. Move your shoulders back and down so that they are hanging down and resting on your torso. Rotate your elbows without moving your shoulders and rest your hands in your lap. This should be a good comfortable position.

3. Take slightly longer and deeper breaths, just 20% deeper and hold it 20% longer. Start feeling that combination of relaxation and invigoration.

4. Now let the breath do itself normally. While the body breath itself, feel the relaxation of the out breath and count breaths from 1 to 10. If you miss a count, start over again. If you get to ten, start again at one. No big deal, just be honest. If the body can naturally breath itself and the mind can naturally from 1 to 10 three times then the mind is nicely settled. (It’s easy to get this part wrong by using too much effort. Anyone can count breaths if they use a lot of effort, like a soldier counting push-ups. This breath counting should be basically effortless, the body breathes, the mind counts, no effort.)

From this foundation starts the basic noting phase…

6. For 5 to 10 minutes, have the intention to notice sensations in a very intimate and direct way. On each out breath, note just one of the sensations that is present. This is a very easy rate (10 to 12 times a minute or so) which leaves plenty of time for directly noticing sensations. The mental note is a way to see if you haven’t entered a trance of sorts. If you slip into a trance and are lost in thought or are in a trance and forget to note, then simply note what was distracting you, give yourself a “good job!” feeling for returning to mindfulness, and start noticing sensations again.

7. Next slowly switch into urges and emotions. For 5 to 10 minutes, switch to urges and emotions in the same way. Urges are like little non-verbal motivational intentions that rise up, usually clinging/greed or aversion/resistance. Emotions are longer lasting non-verbal moods or feelings (different than the momentary sensations). If you slip into a trance and are lost in thought or are in a trance and forget to note, then simply note what was distracting you, give yourself a “good job!” feeling for returning to mindfulness, and start noticing urges and emotions again.

8. Next slowly switch into thoughts. For 5 to 10 minutes, switch to “categories of thought” in the same way. In this step you don’t become imbedded in thinking, but you don’t stop it either. You let your mind think the way it naturally does, but you pay attention to it as thinking, and on every outbreath you note the general category of thoughts you are having. You might be planning your day, thinking about the past, worried about making progress, doubting the effectiveness of the method, etc. Perfect! You would simply note “planning thoughts”, “remembering thoughts”, “worrying thoughts”, “doubting thoughts”, etc. You can make up your own categories or style of labels. If you slip into a trance and are lost in thought or are in a trance and forget to note, then simply note what was distracting you, give yourself a “good job!” feeling for returning to mindfulness, and start noticing categories of thought again.

9. At this point, the mind is now very good at being mindful and discriminating (in the good “distinguishing” sense) between  sensations, urges, emotions, and thoughts. Now for 5 to 10 minutes, let yourself note any one of these things while you let your body and mind do what it wants. This is basically freestyle noting. If you slip into a trance and are lost in thought or are in a trance and forget to note, then simply note what was distracting you, give yourself a “good job!” feeling for returning to mindfulness, and start noticing and noting again.

This all sounds very easy, but very few people are capable of following the instructions above. Most people jump into freestyle noting, which is totally fine, but you need to be honest and admit if you are having any difficulty with any of the four categories of mind objects. You can't go wrong with checking in on all four before freestyling. But if one of the categories of sensations, urges, emotions, or thoughts is more difficult, you might want to spend more time on it. It might be you spend focused time on sensations and thoughts before going freestyle if you are already good with urges and emotions. . It might be that you need to spend a lot of time on urges or emotions before going freestyle. Etc. Basically, you are trying to design a practice that uncovers what is non-conscious or confused in your experience and what kinds of stuff you avoid by going into a mindless trance. Again, the path and goal is at the level of direct, intimate, visceral experience, including the direct experiencing of thoughts as thoughts. Definitely a different domain than therapy or philosophy (but obviously it supports both of those).

Now for the next phase….

10. Now simply sit for 5 minutes without applying any techniques. Let the mind transition from a practicing mind to a normal mind. Notice what observations from practice linger and what you might want to bring with you off cushion. What can you work on off-cushion during your normal life?

11. Dedicate merit

12. And now let the effort of practice go. It is important to have not practicing time to let the mind non-consciously digest what happens during practice. Yes, it’s okay to work on some stuff off-cushion, but don’t become neurotic or obsessive. Just like with physical exercise, you actually build muscle/mindfulness during your recovery from your workouts/meditation. Sleep is really important, too. Strange things can happen over night in terms of developing awareness, attention, mindfulness, subtle distinguishing, etc.
 
The last thing I’ll say is that the direct and intimate experience of sensations, urges, emotions, and thoughts are like a gateway. We assume we know what these things are, but honestly we really don’t. If you can simply have the direct experience of these things, then some amazing progress is made and the seemingly mythical progress described in the traditions all makes sense. And practice does lead to nanas, jhanas, cessations, and awakening. Yes, don’t crave these experiences, but also don’t write them off as unimportant. You’ll be amazed at the powerful experiences that do happen. But the gateway to all of this is simply intimately and directly experiencing sensations, urges, emotions, and thoughts. Don’t underestimate the power of doing these very simple practices. Also use caution with these very simple practices, the results can be destablizing.

In the same way that you tear muscle to build it back to become stronger, you tear apart confusions (fused-with-ness) about experience so that your mind grows clearer.
 
Maybe this is helpful or not, in any case, best wishes for your practice!!