Assuming local expertise, knowledge, and interest in your area, it is fairly easy to get started with Map Maker. You need a computer, a good Internet connection, and a modern browser to start mapping with Google Map Maker. Recommended modern browsers that provide best experience include:
Microsoft Internet Explorer (IE) 9.0 and later (for Windows): Can be downloaded from http://www.microsoft.com/windows/ie/downloads/default.mspx
Firefox 3.6 and later (for Windows, Mac, and Linux): Can be downloaded from http://www.mozilla.org/products/firefox/
Safari 3.1 and later (for Mac and Windows): Can be downloaded from http://www.apple.com/safari
Google Chrome (for Windows and Mac): Can be downloaded from http://www.google.com/chrome
You can make use of secondary data and information such as topographical maps, town plans, GPS data, and so on, but remember all the input has to be done manually and that the data should not violate any copyright or personal privacy. Note that Google Map Maker enforces a strict policy where addition of personal and private data is prohibited and, in most cases, is removed/reported instantly by Regional Expert Reviewers or Advocates.
Lastly, remember that Google Map Maker is available in 185 countries. You can create/edit features in Google Map Maker from only these countries. For a full list of supported countries, visit www.support.google.com/mapmaker/answer/1555415?hl=en.