Looking for a reliable (and much more experienced and trained than I) expository bible teacher? Here are a few outstanding ones whose many sermons and messages can be found on sites such as Monergism.com.
David Jackman (more here: Proclamation Trust)
Stuart Olyott (more here: Know Your Bible Recordings)
Helpful sites for information about expository bible study:
“Bible Study Methods” on Biblical Training
“Expository Preaching in a Postmodern World” on John MacArthur’s Grace to You
“What is expository preaching?” on GotQuestions.org
Related: Why Expository Studies?