Greetings and welcome to the Roleplayer Guild, it is a pleasure to have another member.

To answer your first question, outside services and accounts are not at all required, and you can simply bookmark the forum to access it. To adjust your account here, all you need do is look to the upper right corner where your name is displayed alongside "PMs" and "Subs". Clicking your account name there will lead you to those options, as on your user page you will see "Edit" just below your name and that is where you need go; this includes your avatar upload, which answers the second question.

For your third and last question, that all depends on just what you consider to be exciting. What sort of topics are you particularly interested in as far as fantasy goes? There are plenty of interest checks and new threads beginning at large. Other than this, we do have a Discord chat service, which can be fairly lively depending on the time of day.