FBAR / FinCen Form 114 Reporting

Hello
Hope someone can help please.
I've only just realised this year that I should have been reporting my Foreign Bank Accounts via the FBAR/FinCen Form 114 and the 2019 deadline is Oct 15 2020. My questions are:
1} How many years do I have to go back and report on? I've read you can Streamline. Is this something I can do myself or can I report each year individually, explaining I was unaware that this was a requirement?
2} Do I need to report on Individual Savings Account (Tax Exempt) and/or Bank where my stock/shares from my Employer are held?
Really appreciate any advise and thanking you in advance.
'Best regards

If FBARs have been omitted the choices open depending on circumstances are either using the official penalty-free IRS Streamlined Foreign Offshore Procedures (SFOP)  https://www.irs.gov/individuals/international-taxpayers/u-s-taxpayers-residing-outside-the-united-states or the delinquent FBAR procedures: https://www.irs.gov/individuals/international-taxpayers/delinquent-fbar-submission-procedures

Thank you so much for your help. I really appreciate it. Best regards