I strongly reccommend doing past papers. Try and make sure they are the SQA ones. These are from exam times and not prelim ones (which are slightly different and a bit harder). Use BBC Bitesize also. It has info on these subjects.
If you can't find a tutor have an ask about your area and see if there is any 5th or 6th years there who have done these subjects and passed well.
If all else fails then give me a PM, I managed to get double 1's in all these subjects.
Talking To God....
http://www.fullmoon.nu/articles/art.php?id=tal
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