WildBrownies

Hello, i am a fairly new fly fisher, and have been doing a bit of wild loch fishing for brownies in scotland with a friend and really enjoying it. I was wondering if anybody could give me some more advice on "matching the hatch"? I know you can use a marrow spoon but i have never used one of these before, also i am not, by any means, clued up on what types of flies are around this time of season. I have had a look on the internet for hatch charts but have had no luck. Any advice would be much appreciated. Thanks.