I'm considering purchasing some mining hardware but wanted to try and set it up first to understand how complex it all was before deciding. Based on those messages have I got a sufficient setup should I buy the relevant hardware?

So I've been interested in cryptos for a while but never mined at all and I'm just fiddling around to see how easy it is. I've installed cgminer and an running it through terminal on Mac. I have followed instructions and have no idea if I'm mining at the moment or what? These are the messages I am getting from terminal, could someone explain what they mean?

 [2017-11-27 17:04:37] Pool 0 difficulty changed to 2048
 [2017-11-27 17:04:38] Probing for an alive pool
 [2017-11-27 17:04:39] Network diff set to 1.35T
 [2017-11-27 17:04:58] Pool 0 difficulty changed to 409
 [2017-11-27 17:04:58] Stratum from pool 0 requested work restart
 [2017-11-27 17:04:58] Stratum from pool 0 requested work restart
 [2017-11-27 17:05:29] Pool 0 difficulty changed to 128
 [2017-11-27 17:05:29] Stratum from pool 0 requested work restart
 [2017-11-27 17:07:20] Stratum from pool 0 detected new block
 [2017-11-27 17:13:03] Stratum from pool 0 detected new block
 [2017-11-27 17:18:06] Stratum from pool 0 detected new block

Probably sound like a complete idiot but any help would be great!