I'm a beginner…Need some tips…

Whenever I add content to the page, the Sidebar stays at the very bottom

if you look at the theme’s demo https://wp-themes.com/vina/?TB_iframe=true&width=986&height=499 then this seems to be so by design.

is it possible to place widgets on other places

you can create new widget areas for a theme:
https://codex.www.ads-software.com/Widgetizing_Themes

Thanks alchymyth! I changed my Theme and it worked better. Now I’m trying to add a Forum using BBPress. I created a Forum and trying to integrate it into one of my pages. I can view it after i create it in the Forums Section on the Dashboard, but when I go to the live website, it’s not there. Anyone have any tips? My website is https://www.hawaiitrekkers.com

Another question…how do you make the Social Login Plugin work with BBpress?

your problem has changed so drastically that it might be worthwhile to start a new topic, possibly directly in the BBpress forum https://bbpress.org/forums/