1: Right click on the field you want to be a clickable link, hyperlink tab, click the X-2 button - the formula editor will now open, in here you can type the link directly if it's a statis link or if you want it to be dynamic based on your records an example of a hyperlink I use follows;
2: I don't use cross-tab reports as their functionality is pretty limited in my opinion. Someone else maybe able to assist you better there.
3: Depends what you want, you can eiether just select records for the quarter so they're the only thing visible in your report or you can group by quarter so you can view multiple quarters in your report? Let me know which you want and I'll help from there.
Regards,
Ryan.