Welcome to the forum ^^
The only thing to be a furry, like Winged Zephyr basically already said, is to say you are one. You don't need to have a fursona and whatnot to be a part of the furry community by the way. However, I do understand that you seemingly want to be more emerged in the furryness and the fandom. So by all means, join in on the fun
Some people take years, if not their whole lifetime creating/changing their fursona. Some are simple and some are more complicated. But all look pretty amazing in my eyes
If you need help with anything, I'm always open for a PM (thank you,
Flarei 
Private Message), as you can also see in my signature ^^
Also, I don't usually sue my actual fursonas to roleplay with. I often come up with other anthropomorphic characters. I see a fursona as something close. More like a furry persona, which is basically what it means. So yeah
Also, if you need help creating a fursona, there are some topics here on the forums that could perhaps help you out ^^
Like these:
http://www.thefurryforum.com/forums/index.php?topic=16042.0And:
http://www.thefurryforum.com/forums/index.php?topic=18015.0