Full Bhuna.
One thing to bear in mind that content is always left-right top-bottom, so a table like:
123
456
Will become on mobiles:
1
2
3
4
5
6
Also its now important you make widths % rather than px. If you create a 3-column table by default this will be 33% per column but just bear in mind to remove any pixel measurements you may have added in the past. You can make the table itself an actual width if you need and this will shrink to maximum page width if required.