you could probably find some stuff on reddit miners channel or on youtube
but basically you need at least a pyton (but better with a conda/t10/vette/cutter) equipped with a-rated prospectors, refinery, collectors, mining lasers, fuel scoop and fill the cargo with at least 80% limpets
then fire an prospector at a rock, it if shown more than 7-10% ltd - clean it up, let the collectors pick the fragments, check the refinery and drop the byproducts, periodically jettison everything that is not a limpet or a ltd (you will need to jettison some limpet too to make room for ltd eventually)
when you fill up or when you get bored or your time runs up, check inara for best sell prices on LTD - jump and sell
boring as hell initially, but it may grow on you