If this is the first time that you are going to work with Metamask Extension, then you might be having some queries in your mind. Although using MetaMask is pretty simple, at times, you might need guidance on using itIn that light, I am going to elaborate on one common query raised by the users i.e.how do I open a MetaMask extension?.Read more: OKEx Exchange can be a really good option if you want to enter the cryptocurrency world but are confused about how to do it.