Welcome! I hope you will enjoy contributing to the map as much as we all do!
OSM has a vibrant community, so if you need help, do not hesitate to ask! One good way could be to find local mappers near you and ask for help. There are also the mailing lists:
OpenStreetMap
Discussion
Comment from TheFive on 18 April 2014 at 11:21
HI chayaphorn,
Welcome to OpenStreetMap and happy mapping.
Christoph
Comment from Zethradon on 20 April 2014 at 02:49
Welcome! I hope you will enjoy contributing to the map as much as we all do!
OSM has a vibrant community, so if you need help, do not hesitate to ask! One good way could be to find local mappers near you and ask for help. There are also the mailing lists:
osm.wiki/Mailing_lists
Enjoy!