LFCSA course and Server lab environment from Linux Academy is second to none. By far, the best online micro learning platform for new and veteran systems administrators. Being able to rapidly spin up, multiple Linux hosts and connect the hosts to one another helped tremoundous.
Tips for LFCSA, remember that this exam is targeted at junior system admin. First attempt, did not know what to expect with the Linux Foundation exam format and as an vetern IT admin overlooked a lot of general system admin tasks. Review, vi/vim (copy/paste/jump to line); creating and extracting tars (various scenarious); user adminstration (various scenarios); using find, awk, sed and grep to get desired result; and creating MBR and GPT partions and LVM; starting vms from command line; and review all exam objectives!