its fine to bookmark inner pages, actually it is suggested that you do. there are plenty of plugins available out there that you can use to add bookmarking buttons on your individual blogposts.
i bookmar every post right after i post it. There is nothing wrong with it. I only bookmark to top 13 sites. It is a great way to get quick indexing
first focus to bookmark home page then u can focus on main service wise inner page bookmarking at regular interval.
Ok im confused. Is it better to make and right after do my bookmarking, or do it like 2x a week. I post a post everyday so i get about 7 a week. I always bookmar right after posting, is this bad? should i do it 2 times a week and do like 3 at a time?
social bookmarking not always generate you backlinks, I think it's likely traffic that you get from there.