Northern lights, skunk #1 and top 44 are all great strains to start off growing. Top 44 and NL being very stealthy, very stoney with great yields.
I have grown c99xnl and I would not say that it is the best plant to start out growing for the first time. My first indoor grow was NL and I grew them using LST and I ave. around 7 oz's dried from each.