I think newcomers are people who need guidance, that's why we recommend participating in the newcomer achievement program.
Newcomer community is a special community for publishing Achievement 1 to Achievement 6 posts, so Newcomer Community prohibits users from publishing public posts

If you publish an achievement post, it's okay but your status isn't verified

We don't restrict anyone on Steemit, but other communities have their own rules, you must follow the community rules if you want to join a community you like

To increase SP requires your own efforts, there is no term of help, therefore you need to publish posts that attract the attention of other users so that you get support