If you aren't sure how to do something, then your first port of call should be Google, they can answer questions a lot more quickly than posting them here...
A very quick search using your subject as the search term gave nearly 300,000 results:
Google "datagridview and ms-access database"[
^]
That will start you on the basics, and you can "branch out" from there.
In future, please try to do at least basic research yourself, and not waste your time or ours.