If you are going to castle in the queenside and your opponent pins your night in the kingside you push your h6 or h3 pawn and if retires you push the other pawn, then you castle an you have two advanced pawns to attack your opponent. 
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Thanks for sharing your Pro tip it will help so much
If anyone is struggling in opening.then,I suggest Caro kann opening against e4
Why’s that what’s your thoughts I’m trying to figure out some lines. It’s hard to remember all the variations though because I can’t put full time efforts into chess I just love to play. Right now as black I just mirror than try and play sound chess fundamentals and look for some tactics to get me ahead..what’s your thoughts im close to 900 tank would love to develop and best 1000 ranked players thanks in advance!
Share your Pro tips from other players like my Pro tip is to trade piceses when oppnet is down of any piceses like knight, bishop or rook