Welcome!
You already have good advice from others. Presuming you are new to collecting and not just the forum, I suggest deciding on some themes for what you want to collect. There are many, many, MANY pins out there are it can be overwhelming if you try to collect everything. Having themes will help focus things for you. For example, I generally collect Alice in Wonderland, Nightmare Before Christmas, Moana, Villains, and Attractions. Sounds like a lot, and it kind of is, but still much less than all of what is out there. And I only collect direct from Disney (no Loungefly, etc) and only from the US to help narrow it down a bit. That said, I'll also collect other pins that I just like. It's more of a guideline than a rule.