Hi, welcome to the forum
1. Are you logging in to http://world.waze.com
? Make sure you've selected your country on the homepage before hand.
2. Check that all the roads near your house are connected
. Use the "[_] Highlight Connectivity" option on the View panel. You can select two roads and "Connect roads by order of selection", or select the junction and click on "Enable all turns".
See the Wiki for more on how to edit the maps. There is a lot of useful information, which I recommend you take the time to look at. > http://www.waze.com/wiki/index.php/Map_Editing
I hope that helps...