BOP,
Try these sites:
CMHQ Tactical articles
Battlefront CMBO FAQ
Platoon Leader Tutorials (for CM)
Byte Battles scenarios
The first three are strategy article archives, the last links several small (hour-long) scenarios to practice with after you play the scenarios labelled "tutorial" in CMBO itself. That's what got me started about 6 months ago
There's also a PDF CMBB guide that is quite applicable to CMBO.
PM me with questions if you've got them, but I'm not way past novice status myself (though I played ASL for decades before coming here due to lack of time and opponents).
doug