I have plan to build my website. I do not know php code much. My friend suggest me use a page builder for content creating. Should I use that? Do they make website slow? I found some one in wordpress.org Beaver KingComposer
[edited by: travelin_cat at 2:05 pm (utc) on Nov 2, 2016] [edit reason] Removed Links [/edit]
This post is a little old, so not sure if you still need a reply, but Beaver Builder is arguably the best out there. The one thing I would recommend though would be to watch the titles. Sometimes page builders will have DIY elements that misalign your H tag assignment (e.g. the main title on your page is an H7 or something like that).
As for speed, page builders can slow down your pages (especially when compared to a flat coded template file), but shouldn't be too detrimental.