I hate to say this but considering how much ‘stuff’ there is on the internet from people without any qualifications, go right ahead and add another website. Caveat emptor.
Sorry for being so facetious; I assume that you mean well and feel that you have acquired a great deal of knowledge that you want to share. The picture might change the moment you start charging for your advice. Then you would need at least some form of business set up for tax purposes and liability insurance. The liability insurance through IDEA will ask which certification you hold.
But since you already have a good base of knowledge why not go ahead and get a certification? This will add a great deal of credibility to your advice. One of the greatest leaps of paradigm shift is when somebody asks help who is in a completely different place from yours. You only need to look at many questions that are posted here. Often enough, the answers start with ‘it depends’ because online advice is such a tricky business even if you have qualifications enough.