The first thing I recommend you should do, is buy some clothes.
To buy clothes, click catalog.
This will take you to the "Featured" page of the Hats/Gear/Packages ROBLOX has created.
Click on Top Favorites, because there we can browse the clothes.
You can click on best selling or recently updated, but for this tutorial, I'll stick with Top Favorites, which is on the left menu bar.
This page will show the most favorited hats.In order to view shirts, you'll have to click Shirts, on the left menu bar, near to where the Top Favorites button is.
Now there are some clothes you can buy! You can search to your liking, or just browse through the catalog until you find something you like.
Once you find a shirt you like, click on it.
It could be either on sale in Robux (R$) or Tickets (Tix). These are the two currencies of ROBLOXia.
Since you just joined, you probably won't have enough tickets, probably ten if you just joined today. If you have enough money, you can click "Purchase with Tx"!
Once you click the button, you will be prompted with this screen.
Go ahead and click "Buy Now!"
Once you click that, you'll see this screen. Go ahead and click Customize Character, or continue shopping if you want to buy other things.
When you are at the Customize Character page, you can customize your character! You can equip the hats, gear, packages, shirts, and whatever you bought!
Since we just bought a shirt, we have to click on Shirts.
There, the shirt you just bought should appear there!
Click the Wear button to put it onto your character!
The clothing you just bought will now be on your character ingame!
That's it for this tutorial!
Thanks for reading.