Your original question says 'I need to lay block and put up walls. How do I put it all together?'
Are you looking for 'direction' on how to lay cement block? Then, are you looking for direction on how to frame the inside? Then are you looking for direction on how to install headers in block?
What I suggest is you 'tell' us what it is you DO know how to do and what it is you DON'T know how to do (or are having trouble understanding), and we'll go from there. To me, your question was just too broad. No one 'here' can see the garage. They're all different enough that you should consider a more specific question, or questions. That's all.