What is the Program that you are using to view both Hebrew and Septuagint verses next to each other? Did you create this yourself or is there an app to do this?
Not to be picky but because Hebrew does not have an indefinite article (basics of biblical Hebrew 5.11 third edition) it makes no sense for Hebrew to talk about the DEFINITE article. Its just the article. Otherwise awesome video
For Hebrew you will likely need to take one semester of Hebrew but it is best to take two for fluency. You can also learn it independently through Zondervan and their online course. For Greek it gets much more complex as Koine Greek is 'easier' than LXX. LXX is often considered PHD level (check out McMaster Divinity College for instance)
I second Dustin’s thoughts! For both languages the elementary grammar is taught in either 1 or 2 semesters depending on the seminary. Colleges typically split it into 2 semesters (one year). I think it’s really valuable to do at least one more semester after the elementary sequence to help solidify the grammar and improve your reading skills. Relative reading fluency or ease is probably going to take several semesters/years. Also check out Daily Dose of Greek/Hebrew. They have free video lectures covering the first year elementary grammar.