CHANGING HTML CODES

Hi guys,
I have installed the new OpenCart, to use for my online store, everything looks fine, BUT I want to change the HTML text on the 'create account' page and also the main page such as CATEGORIES, BRAND, INFORMATION, SHOPPING CART, CURRENCY AND BEST SELLERS to other Latin language, [ I want change from the default English to other language].
Is it possible to do that or they are there as a default.
Is there an HTML files to edit other than the *.tpl files.

many thanks guys

Look at the language files.

The default set to english, but through easy configuration, you can make spanish your default or only language in the administration & language files.
1. Make a copy of the catalog\language\english folder and rename new folder to spanish.
2. Go to the admin section and add this new language to the site. Look in the admin tab>configuration>localisation>language & fill in the form there for the new folder you created.
3. Go to admin tab>configuration>setting. Look in the 'Local' tab and choose the language in the dropdown list.
Your default has now been set. All you need to do now is go through all the language files inside the spanish folder and change the entries from english to spanish equivalents.