Landing

When i am given the clearance to land by ATC does mean i have to immediantly turn and begin final? Also how far is a good distance for all big jet aircraft e.g Boeing and Airbus?
Flight Simulator and other chat
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https://forums.simviation.com/phpBB3/viewtopic.php?f=21&t=62417
Thank you for your help. I asked this because i guess i took to long landing and when i was like 100ft away from the runway they cleared another plane to taxi onto the same one!