score:7
Yeah, initially you may experience all kinds of glitches. When you don't meditate a lot of energy is stuck at different layers of your body-mind, and when you start meditating those layers start connecting to each other and energy starts flowing up and down.
So you may get a headache or feel like you are flying or see some flashes of colors, or get various body experiences etc. These are all like hallucinations, don't take them too serious. It is only a side effect of your energy moving to a more balanced state.
Some of them are very cool. Some of them can be super interesting thoughts or intellectual realizations. You job is to not fall in love with them on one hand, and don't fight them on the other hand, but let them come up and pass away so you can keep going.
Next you may expect funny dreams. Maybe lucid dreams when you know you're dreaming. Maybe flying dreams. Maybe dreams in which you go through walls. You may also start noticing how in your post meditation you become more steady and your senses get a lot brighter, like you feel more awaken.
On the other hand, at some point you may feel like meditation gets very frustrating. For some reason you start hating it. Usually that means you got stuck on some preconceived notion of how meditation is supposed to go. If that happens, let go of that!