Trying to make custom manager forms, dynamic loading of tv's

Does anyone know any good tutorial/info sites for making custom manager ipnut forms in backend of modx.

For example:
- make just 1 screen (without page settings, tv page etc), and put all input elements that user can edit there
- Populate a template var (checkboxes) with resources from resource tree (like a this (in resource tree ther's a list with download docs, the user can update these docs, put more in, etc... Then on each template he can see a template var, where he can select the downloads to appear on that particular page, list gets loaded from tree (probably getResources snippet). But how can I put that call in template var to populate my checkboxex or dropdownbox

you can use the resourcelist-TV or you can use @SELECT or @EVAL - bindings for input-options in your checkbox-TV.

On the frontend you can use getResources with the &resources-property

You can use Form Customization to remove the stuff on the Create/Edit Resource panel that you don't want the user to see.

You could also let the user create and edit the resources in the front end with NewsPublisher, which makes it easy to just show the fields and TVs they can edit.