I heard about the social media marketing is the basic keys nowadays but there is a problem interrupting my web promotion, I just wanna let my self-known about the channels of social media which is more beneficial? And is it necessary to have an account on all social media channels?
No, you don't need an account on every channel. Not yet. Focus on 2 to 3 platforms until you master them, then go to the next one. Tell me more about your niche/offer/service/product. It highly depends on this factors to determinate what social network is best for you.
You don't need to have accounts on all social media. I think you just need to open account on some popular social medias such as Facebook, Twitter, Pinterest, Instagram,...And try to focus on these networks only.
You should at least be visible on Facebook, Twitter, Instagram and Google+. To be successful in promoting your website you must post regularly on social media about relevant things to your niche. The worst thing is to have social media profiles that are not updated. Then people will think that your website or business is not active.
Social media marketing increase your business visibility on real time. So it's beneficial to promote your business on your targeted audience on real time. Try to use Facebook, Twitter, Linkedin, Instagram and Pinterest.
Well choose only 2 or 3 and be good at them .About social media its good to your business but i also think that email list its the core engine of email business