There are no shortcuts in learning the word of God. However, a vast wealth of Bible knowledge is not necessary to do personal work. Any person who knows enough to obey the gospel knows enough to teach others what to do in order to be saved. We must use our kinships, friendships, and other associations to prepare people to receive the gospel of Christ. The very practice of personal work will increase one's Bible knowledge.
Experience builds proficiency.
Do not wait until you think you can be an effective presonal worker. God demands the same of His children in the matter of winning souls. He expects us to improve as we evangelize, not evangelize after we feel we are competent. It is the power of my Father unto salvation, not your own ability. You took My love and My grace for granted.