No, you don't need to do that, and not a good idea as you are just attracting scammers to attack you and trace your transaction making you find regretting. It is rather to talk about it personally and besides, Bitcoin has already been known online what is the need is to educate interested people clearly.

Honestly, the people around you will see what happens to you, they'll see improvements in your living which encourage them to ask what you are doing, then that was the perfect time to tell about Bitcoin. Sometimes we need to keep silent as it also address our security.