Hi quarez1.,
1) i) Refer this – http://prntscr.com/djmtnt
ii) To remove this message “Sorry, no portfolio items isn’t here” , Go to corresponding portfolio template page and Refer http://prntscr.com/djmqhr
2) Get into wp-content\themes\VintageImmersed\inc\layout_three.php And refer this – http://prntscr.com/djmssd You can change “OUR SERVICES”,”LATEST POSTS”,”RECENT WORKS” etc here