Findtutorials.com tutorialized.com good-tutorials.com What kind of tutorials are you looking for exactly
directory submission is pretty simple process. all you do is visit a directory and submit your site. you can check the directory section of the forum where you will find lot of directory lists. just find the right category in the directory and submit your site. i suggest you submit manually one by one for best result. forget about directory submitter tools. best tool (more like firefox plugin or extension) you can use is roboform or some kind of other form fillers that will save your submission data but you still need to browse through the directories manually and once you find the submission page in a directory, let the form filler fill the form for you. all it takes is a LOT of time but its pretty simple process
Yes submitting to a directory is very simple, all you have to do is pretty much fill in your url and website name as well as a short description. I don't think a tutorial is really needed if you check out a directory.
worknet.tk and socialmarker.com - While you won't get traffic from the social bookmarking part unless your page gets on their top page (like Digg or Twitter), they provide a good quality back link.