Offline down load of tracks and import of tracks (GPX etc)

Hi, I am new.
Can I download tracks and save onto my PC and/or mobile to be used OFFLINE?
Can I import of tracks (GPX etc) onto my PC and/or mobile?

@Rob3 You can download the tracks from the walk pages. There’s a section “GPS Tracks” with links to the track files. Note that not all walks have them - only for those walks where somebody has uploaded the file.
For using the tracks you’ll need to find another GPS app. Aussie Bushwalking doesn’t have anything in the that realm.