now that you've done all that you can head towards the shops, they are located in the 'shops' tab in your dashboard tabs
you can go to any store you would like but as you only have 250 au(the currency of this site) it may be best if you start out with the freebies in the 'threads' shop, clicking on an item lets you preview the item itself, clicking the buy lets you buy one copy(by typing in a number in the small box you can get multiples but for now ignore it)
faces and hair can be fount in the 'trinkets and tresses' shop, face parts are free but hair costs au(minimum 250, exactly what you have) you don't have to grab all of the free things though, only the ones you like, they will still be there if you want them later but if you decide you don't want them you can't give them back. a helpful tip, if you are looking for something specific you can type it in the search box to the right-hand side of the screen
just for fun i want to get 'sugar beet' hair
now that you have your new items you can go back to the 'avatar' tab to get dressed, don't forget to click the editor
you will notice there are now more options for you to click, when you buy or receive an item it will go to a specific category(hair items to hair, arm items to arm ect.) clicking on each will let you click on items in it
once you have put on all your clothes you can go to that little link called 'layering' to change the order of the clothing(get it^^) don't forget to save!