after login: what page should be shown

hello,

after login: what page should be shown (redirect) if the user will choose some
articles with pictures from the K2 categories so not to the user profil please?

(i'm missing a module where i can shown all the K2 categories with all the K2
articles which are connected with CB).

knut

After login if no redirect URL is supplied to your module and no first time login redirect is supplied in CB > Configuration > Registration they're sent back to the last page they were on if possible otherwise they're sent back to the homepage. You can specify a specific login redirect URL within your CB Login module if you want though.

I don't think you're understand how CB and K2 work together though. There is no "articles in CB, but not in K2" scenario. All of the articles are always in K2. CB stores no articles. All CB does is pull the articles from K2 database and display them via CB Articles. Beyond that it has zero relationship with K2. K2 it self has a parameter to integrate with CB to display CBs avatar instead of its own avatar, but beyond that no further integration is provided or needed. You're free to use whatever K2 article display modules you want.