From the second link that Steve provided there is a particular sub-tutorial which should help you: http://manual.audacityteam.org/man/Sample_workflow_for_LP_digitization
My favoured tool for click and pop removal is Brian Davies’s excellent ClickRepair - it costs a little but works like magic. See this stickty thread: https://forum.audacityteam.org/t/click-pop-removal-clickrepair-software/1933/1
Do make sure that your stylus is clean and dirt free and that your records are as clean as possible before playing them. A static-free environment is good too - which is where living in the “moist” climes of Manchester helps. 
WC