So, you have had trouble to get started using SCID? Or, not ready to pay a hand and a foot for Chessbase? This might be what you need to a price you will like: ChessPad
I have not been working with huge databases using ChessPad so I cannot tell for sure of the Search works efficiently but for the DIY Chess Improver, I think it works perfectly.
Hey, I even managed to add Stockfish (also free!) as an engine so ChessPad must be really userfriendly. My computer knowledege ends just beyond the power switch.