It's a free forum atleast if your IP address hasn't been penalize by the forum that you'll have to pay some fees before you can start posting on the forum. Just as others have said, you're free to engage in discussions on here but just make sure that every thought that you write is yours and not stolen, if you're to quote what others have written, always give reference to the source of your information. Depending on the section that you're posting in, you can make discussion on those subjects and it most not necessary be Bitcoin related. I want to welcome you to the forum and assure you that you're among people that wants what's best for you so take their suggestions you get, serious and adhere to the laws guiding the forum.