It seems to be a familiar tale when you start out in internet marketing. I spent my first 12 months buying various products describing various systems. I would then put a lot of work in initially but then lose interest when the results didn't live up to expectations. I would then move on to the next product and repeat the pattern.
If I was starting out now I would spend a few months posting questions on forums like this and soaking up as much information as possible. Spending some time now could save you months of frustration in the long-term.
But I don't regret that first year as I learnt some very good lessons but some expensive ones!