This is time that will pay major dividends down the road.
The mayo clinic libraries have posted a series of screencasts that will make you better at PubMed. Spend the time.
https://videopress.com/v/wp-content/plugins/video/flvplayer.swf?ver=1.18
https://videopress.com/v/wp-content/plugins/video/flvplayer.swf?ver=1.18
Glad they helped you!