Welcome to the forum. I hope your bank balance is ready for the beating you will give it on equipment over the next few months!
I know this is Gingers guide but @sarg has made a good video on YouTube showing how he knocks bats in https://youtu.be/AkkBpC6ff60
If people are looking for a decent quality heavy and cheap mallet I can recommend the below one. It's been a revelation compared to my old Kookaburra one of roughly the same cost.https://www.ebay.co.uk/itm/302334844383