Hi Gabriel!
Little bubbles can be really annoying. You have to tap the syringe with the back of your fingernail enough times so all the bubbles became one large and then gently push the plunger until you see a little drop on the top of the needle.
About dosing, In this thread you can find useful info not only about how to measure the dose with the type with a digital calliper but also with a paper one.
You will definitely need a magnifying glass!
Info - Dosing with calipers updated w/videos
I'm copying Jil & Alex's message
FYI: The German-Katzen Board created a paper template for fine dosing with BD syringes.
The template is included in this document:
You can print it out for your own use. However, please be aware the template is for those using BD Micro-Fine + Demi 0.3-mL U-100 syringes
only.
https://www.diabetes-katzen.net/insulinruler.pdf
Also It will be useful to create a spreadsheet for Luna.
All the info is here and you can ask for help if something bothering you, Marje and Grace is going to help you with everything you need.
Have a nice day