Word userform pulling data from Excel

Hello, everyone,

I realize that the question is frequently ask but I could not find any solution that worked for me.

I have a word document where I am creating a macro in order to generate standard report using a template and some data entered by users. I need to have a combobox on my form and four text boxes associated with it so that the users select values from the list, and the text boxes are filled automatically but can be edited. The data source is an Excel worksheet.
I would also like the users to have an opportunity to add new rows in the datasource entering it in the form (and maybe using some special button).

I'll be extremely grateful for any help