Dear @boss75, I asked to @cryptokannon, who is the coordinator behind this community, and this was her answer:

Anyone interested in becoming a curator is invited, once the posts start flowing, to produce sample digest posts.

They should choose one of the seven themes they are most interested in, start reading and then make a weekly digest post with their 10 selected best posts, with a short reason why each has been picked.

We will be looking out for these sample digest posts and when we find a particularly good one the curator will be invited to become an 'official' Better Life Curator.

Once we have sufficient curators in any of the seven categories we will announce that, and interested curators can continue to produce sample digests in the other categories if they want to.

They should chose one of the seven themes they are most interested in, start reading and then make a weekly digest post with their 10 selected best posts, with a short reason why each has been picked.

Cc. @steemitblog

Please, @boss75, if you have any other doubt, let me know and I'll do everything to solve your problem.