Hi guys,

I know this question is out of place but this is a place where I feel comfortable and enjoy learning what I can.

I've been trying to learn more about blockchain by playing with my linux bitcoin core node and the bitcoin-cli command.

I keep hearing about mempool and how poeple are spamming blocks with low value transactions.  I don't see a handy
command for seeing the size of the mempool or the number of transactions waiting to be put into a block.  I would appreciate
an example command for this.

I would also like to list my recent transactions to be sure they match up with kano's block payouts.  I could easily go to that
machine and look at the GUI, but I want to learn how to use the command line stuff.

Does anyone know of a good tutorial for using bitcoin-cli?  I've read lots of books but need some hands on.

Thanks,

Tom