I have found the IP address of my switch, but when I try to access it using a web browser, it does not accept my password.
Try the default password which is password. If this fails, you can reset the switch to factory default settings to restore the password to the default. Again, please note that this will erase all configured settings on the switch.
In order to login to your Netgear GS108Tv3 you are going to need to know your username and password. Just in case the router's username and password have never been changed, you may want to try the factory defaults. Here is a list of all known factory default usernames and passwords for the Netgear GS108Tv3 router.
I continued as follows: Since GS110TP doesn't allow defining different users nor RADIUS-based management authentication tried what Koos suggested and used the default 'admin' user as found on larger switches that do have user name for login. This resulted in a password prompt. To get full access, enter 'enable' and enter twice (Cisco IOS - anyone?). Now I can confirm that this works for the GS110TP running version 5.4.2.10, and likely the GS108Tv2 (uses same firmware image):
Note: If you cannot sign in with admin and password, you can try signing in with the default credentials printed on the bottom of your Netgear router. However, if you changed them in the past but cannot remember them, you will have to hard-reset your router so you can use the default credentials to sign in.