App Academy

Correct order to follow AAO after Ruby (SQL section)

Hi,
I have completed AAO upto Ruby & am now in SQL section. But this section seem poorly organized. Or may be the order of the whole curriculum is wrong. In SQL section i am seeing video solution (in additional resources) but the problems/assignments corresponding to that was not mentioned at all before. Also this whole section seems scattered. Could someone please share their journey/advice as to how I can proceed with the whole curriculum. Should I follow the course/lecture order provided by AAO or is there any special path to follow?