Here you go:
"Command>Home" will take you to the start of the selected region.
"Command>End" will take you to the end of the selected region.
Hope that helps, cheers 🙂
Top left corner, select "Logic Pro X" > "Preferences" > "Display" > "Tracks" > "Grid Lines" where you can select "Automatic" or adjust the grid lines appearance manually.
Just a thought. What OS are you on? If it's Mojave then maybe you need to go to "System Preferences" > click on "Security and Privacy" > click on the "Privacy tab" then select "Logic" to allow it to use the microphone. Hope that helps.