Find a platform you can relate most to & maybe don’t try to do them all:
Twitter for short insights & passing thoughts.
Instagram if pictures are more your thing to tell your story.
LinkedIn if you are looking for industry connections or more detailed articles.
Facebook for groups with common interests.
Just a snapshot of a few & thinking which may talk to you the most 😉
That & making a conscious decision why you want to use social media: to share, to sell, to connect, to inform?