The old carpenters rule. Measure twice, cut once applies here. Getting comfortable with the pattern is an important step . Read , read and read again.
I go through a pattern and lay out my fabrics with a post it marked with the cutting info. I most always do a sample block with scraps if it is one I am not familiar with. Fabric is very expensive and I surely don't want to make a mistake just because I didn't read all my directions.
You can choose so many ways to make a HST and it doesn't matter as long as the measurement is right in the end.
You might want to start a notebook with tips and methods you would like to try or use. I literally cut up my magazines and file tips, patterns, quilting motifs, etc., in separate books. There is always a reference to go to.
Good luck on your quest, I would also like to know of any info book like this.
peace