Appenstance: Looking for info on downloading apps

Well, two months ago, I got myself a nifty smartphone here in China. It’s an Android phone (Android version 2.3.5), but is neither an iPhone nor a Samsung. If it matters for getting answers to this question, it’s a Lamtam LT S980D (version 1.0).

Now that I’m comfortable using the thing and know the legitimately free wi-fi spots in my burg, I want to download some apps for it. Free apps, cheap apps, cool apps, useful apps. Just plain apps. The problem is, when I follow a link to “get this app,” I always get a “you do not have permission to access this site” error.

HELP! How can I download Android Apps?

Thanks in advance for answers.