I'm above average, but not a grandmaster (not even close!)
but I'd be interested if you can provide some lessons, i.e. openings, middle game and end game strategy.
Of course, if it's not too much trouble...I'd appreciate that.
my usual strategy (and since I don't know the terminologies, I'll just use plain english):
I try to protect my King by castling if possible.
I try to maintain control of the center square
I am agressive with the knights, and I use the bishops for defense (in the early and middle game, at least)
In end game, I use bishop a little more aggressively, as well as rook.
Opening strategy, I think, is probably the most important, as well as middle game.
As long as I can maintain equal with my opponent up to middle game, I consider myself to be in good shape. End game, I just use common sense and intuition, and there's more creativity in end game, which I really like.
I avoid exchanging pieces, especially knight with bishop, vice versa (unless in some rare cases...value of pieces change in the course of the game, sometimes I just use intuition to determine if exchanging pieces is a good idea....I'm not yet very good at this though, sometimes I mess up)
the Queen is my best friend.
Usually, against a skilled opponent, I can last up until the middle game, then I tend to lose my head during end game. But generally, I'm above average. My uncle is a chess champion at his local village, I'm able to keep up with him up to middle game. I've beaten him once, out of 40 some games, lol.