Yeah, more info on what exactly you're trying to do would help.
I'll shoot in the dark here, though.
Adding images is easy if you have an ftp program like Fetch(for Mac) or CuteFTP(what I use on a PC). There are plenty more, but those are what I use. Just drag and drop from your computer's folder into your site's folder. Most ftp programs are set, by default, to identify the type of file you're trying to upload and will handle it accordingly. If your images are showing up as code/text when you try and view them on your web, then your file type settings are off.
Are you having a problem trying to use your website's control panel? I would advise against using it if you're uploading a number of files. I'm not even sure what kind of "control panel" you're referring to. I should just stop here until we have more info.
As for adding words that google will pick up, well, it's not as easy as it used to be, thanks to spam/porn sites misusing this function. Keywords are placed in the heading section of your html, using
<META name="keywords" content="
and then you'd type in keywords, each one separated by a comma, and then close the section with quotes and the greater-than sign. Google pretty much ignores these keywords these days, instead checking the actual visible content of your site. Spam/porn sites would put just about every word in the dictionary into their keywords section, which made searching for just about anything a cornucopia of porn site annoyance.
If your site content is on target and specific, google searchers will find your site. This is, however, a problem when it comes to Flash sites which have no, or very little, actual html text visible. There are some tricks, though. and maybe someone else with a lot more experience than me can help you out there.
-kurt