Social media is a mandatory step getting online audiences and being seen in your niche market. Depending on your public (age, interests, and geography) you can choose the right social media channels.
One strategy is to open 3 or 4 social accounts but to invest most of your marketing effort in only one or two at the most. For example, if your audience is younger you might want to concentrate your effort on Instagram and maybe Facebook.
If your audience is more business related and you know your viewers and buyers are mostly on LinkedIn, that will be your main media channel. Be prepared that building audiences in some channels can be a more painful and time consuming process. An example of this is Facebook versus Twitter, being the former easier to get more audience.
There is also the question of how each social network is implanted in your country or business zone. For example Twitter does not work well in some countries and there are others that have their own local social networks.
Opening a social network account is very easy and generally requires only a few minutes. Nevertheless, each social network requires different information and also different photo dimensions to work with, so it si likely that you will have to spend more time customizing it to your like.
Best way is to build a set of templates to work with, here are some examples: