If you are in the USA, then contact a dealer to order navigational charts. They can assist in getting the correct region and take your order for the unlock code so you can use the charts. You will need your system ID to order unlock codes. Here is a link to our dealer locator: https://furunousa.com/en/company/find_a_dealer
There are also bathy charts available depending on your location. There are free bathy charts for East and West Coast of the US that should already be available on your display if you change the chart type to fishing by swiping up from the bottom of the screen. These are strictly bathy lines. Another version is based on C-Map data. It can be ordered by selecting a C-Map Fishing Chart to order. Lastly, there are some CMor charts available depending on location. To look at chart coverage area, one can start here: https://furunousa.com/en/products/navnet_mfds/browse?filter=Discontinued.eq.false&group={CFBDF652-0102-4A61-9835-CF99FD2D0A6F}&groupName=Charts%20for%20NavNet%203D,%20TZtouch/TZtouch2/TZtouch3/TZtouchXL
There is a trip log (aka trip odometer) that can be reset by selecting reset in the data box. If one wants a second trip log, trip log 2 can be added to the data boxes. There is an odometer data box that shows the total distance travelled since display was in service. If that's not what you were looking for, please provide some more detail.