Hi, I'm glad you signed up. This is a great place for advice, support and encouragement.
The thing that you said about knowing about fitness and nutrition, but then to apply it to yourself - Oh yeah, I hear you loud and clear on that one.
Don't worry about being overwhelmed, you'll get the hang of it.
And that IS quite an accomplishment, 5 days a week for 17 weeks straight? Fantastic. You've got half the battle won right there. Good luck to you. I look forwarding to getting to know you better. So post often.