This post contains Amazon affiliate links. I receive a small commission if you use these links to purchase something at no additional cost to you. Thank you for the support!
If you are starting, the choice of needles is probably overwhelming at the beginning. The choice of needle should be based on the type of fabric and the thread you plan on using. I use a high quality polyester thread made in germany (Alterfil S100) and I mostly alternate between universal 80/12 and universal 100/16 needles from Schmetz. I only stock up on these which makes having enough spares for a project a certainty. You will need more 80s than 100s since they bend and/or break more easily.
If you only want to order a few needles to start with and find what’s working for you, an assorted needle set is always a good option so you get to build up your own experience but you will probably will end up with two or three sizes that will really work for you and for your work.