Well you can follow the directions in the Help files on how to enter the ID/file number/whatever they call it on 23andme. But to get the most from the test you should get the raw data which will be in a zipped file downloaded to your computer and then upload it to GEDmatch so it can be compared with tests from other DNA testers like Ancestry and familysearch. GEDmatch has directions on how to do this. It takes a few days for them to get the data linked to their system, but then you can expect lots more matches. GEDmatch also has e-mail addresses for each match, which will allow you to contact people to work on where your match may come from. Once you're entered the GEDmatch ID for your test added to WikiTree, you will be able to check and see if there are any WikiTreers are possible matches and you can compare their kit# with yours and see if there is an actual match or not. Good luck!