WPF creating a datagrid with comboboxes(fkeys) and CRUD

Question

I know that there are quite  a lot of examples out there on this subject, but in the end they don't seem to work for me. I really don't want to start remaking everything with MVVM approach simply because I do not have the time to learn it at this point. The ones that I have found myself show only a part of the process and when I try to follow one of them and then switch to another example it turns out to put me in a situation where I need to change half of the code already written.
My question is: Could you please post some links to tutorials or examples where they show all of the process not just a part on how to create a WPF datagrid that is bound to two different datatables (one of the coulmns is an fkey and I need to change the id value to a name of a category) and has CRUD operations. I have done it in winforms but all of this bnding and observable collections seem incredibly confusing to me.
Thank you in advance.