This may not be exactly the answer you are looking for but here it is...be consistent.  It usually takes time to start achieving results.  Set yourself a schedule of things you will do to promote GDI and do them every single week.  Pick a few days a week to post a new article, visit forums every day, post to your blog if you have one several times a week, post classified ads several times a week, keep putting out your videos.  Usually results are slow, especially as you learn.  One huge key is be consistent.  Keep learning but also keep doing doing doing.  You will see results.