Hello,
When I first started using GIMP, it took me a while to figure it out, and I made a few mistakes. Well, here's a tutorial so others won't! Although, you will need some VERY basic knowledge of the gimp, ie placing text and choosing a colour. Anyway;
1) Create a new image. Any size is ok.
2) Put in some text of your choice. Now, select the text, and using the text tool, click the button marked "Path from Text".
3) Now, make a new transparent layer.
4) Selecting the new transparent layer, make sure it is below the text layer, and then use the select menu's from path option.
5) Select menu -> click the grow option, and enter in a number of pixels.
6) Fill the selection with the colour of your choice.

And voila! You have a text outline!

Remember our forum rules as expressed here http://www.astahost.com/how-s-tutorials-f6.html :

Your topic is interesting and useful, but it's far below this 500 words thereshold.
Please, next time, make an effort and write down more didactical texts instead of writing short notice.
I will simply refuse your next tutorials if they keep being so short.
Regards
yordan