You are trying to tackle too much at once. Two days is barely enough time to get to grips with Zbrush's viewport navigation. Certainly nowhere near enough time to expect a beginner to learn all the tools necessary to block out a base mesh. I think the best thing for you to do is to spend several months following modeling…
Good advice from cryrid. If you want to make an animated game character from start to finish using ZBrush to sculpt, and you also have Maya then there is a great tutorial/video course from Mike Pavlovich available on eat 3D: http://eat3d.com/bundles/zbrush4_character you can find a summary video of the course on youtube. I…
I recommend you to follow a decent tutorial and study on fundamentals of character modeling and give it some time. You have right idea and softwares to do that. Study on them