Width change on the sidebar right

Hello and thanks for the theme!
I’m new with the theme and not so well in all the terms.

1. I trieds to change the width of the sidebar right for the Facebook-Box to have all colums the same size like in your explanation.
I looked through all comments…please let me know how to change that.

My website is http://cosmic-vibration.de

2. On the menuepoint “on the road” the posts are lapping over each other. I tried all possibilities to change the video post to the same size like the others but I couln’d manage. I also don’t like the line down under with admin, date etc. and the date shows in the title when opening… I hope you can help me how to change that.

Thanks a lot for helping! Blessings Alix