combining columns from multiple sheets into one column

I have been struggling at this for hours and trying to translate other people's suggestions to similar problems. I just can't get anything to work. I don't know how to use VBN. I'm using Excel 2011 for mac.

I have date on several tabs with Dates (date columns; not the year columns) and cash flows.

date cash flow

I want to combine these all into one column on a separate sheet. If somebody can help me with a formula that would be the best... but if VBN is the only way, please be patient with me and walk me through all the steps to get it to work.

I would really be grateful of any help.

Thank you!