Hi Baloyi khazamulae! I noticed your contributions and wanted to welcome you to the Wikipedia community. I hope you like it here and decide to stay.
As you get started, you may find this short tutorial helpful:
Alternatively, the contributing to Wikipedia page covers the same topics.
If you have any questions, we have a friendly space where experienced editors can help you here:
If you are not sure where to help out, you can find a task here:
Please remember to sign your messages on talk pages by typing four tildes (~~~~); this will automatically insert your username and the date.
You don't need to "download" wiki. It's not an app in the usual sense. There is also the Simple English Wikipedia, which is even better for children.