I don't know any quick tips, are there any? but ice cube trays are good for storing stock, then you can just use a cube a time. Doesn't help much with storage space tho.
If I'm 'cheating' I use the Knorr liquid meat stocks for curries and stuff which are not baaaad, not brilliant but OK, and that green dried vegetable bouillon one in the cylindrical, um, thing for vegetable ones, which is very good. You can get an amazing veal stock at Borough Market which is in a little jar which don't take up no space and is wicked on roast potatoes.
Ginger Pig at BM always gives away tons of pork bones for free if you're passing. I can't get free chicken carcasses anywhere tho.