Have some questions

It's funny how many questions I've posted on this sub god damn. I'm working my way through kapital and am planning to re read some of the beginner texts cause I got humbled in this sub and realised idk shit so I'm asking these questions because I'm not sure when I'll be able to get an answer to them from the texts themselves. Here goes

What is moralism? Why are Marxists/Communists against it?

I got a vague definition from wikipedia and I see the word moralism thrown around this sub so I'm curious as to what it exactly means and why Marxists are against it.

In Kapital Chapter 1 on commodities Marx mentions use value and another form of value? Is my understanding of said other form it being market value or just the price of the good correct?

Self explanatory question. I don't have my notes with me to cross reference and say the specific name of this other form of value but my understanding of it is that and I'm curious as to whether I'm on the right track.

Last question is what is a Marxist Lennist, why is this sub against them?

Granted from what I've seen online i.e depogram guys, Hakim, Second Thought etc they just seem like people trying to sell me Marxism instead of teaching it to me and trying to reconcile their politics with Marxism. But I'm curious as to the theoretical differences between this sub and Marxist Lennist?

Thank you and thanks in advance in case I don't get to reply.