u/Green-Mongoose5152

I need guidance on how to actually grow or start a retirement fund. I admit I have had my head in the sand over this. Please don't shame me. I know I am late to this way of thinking. I am 45 years old.
I stayed home to raise kids but am back working. My husband has an RRSP (im not sure its amount). I have a tiny one, like 6k? and an investment that has 35k in it. I work part time, and only make 25k a year. We have 3 kids, 22 y/o will be moving out in september, 20 y/o who is in university so lives at home still, and 17 y/o
We have a mortgage that has 280K left and no other debts. Husband brings in around 100K. Theoretically we make enough but it always seems something comes up.
I am starting to panic about retirement. I need to save/invest, but I am not sure where to start. I am lost when it comes to all of that.

Any advice, I would be so eternally grateful.

Having analysis paralysis over here! I prefer paper books, especially before bed as I try to limit blue light leading up to sleep.
I have a month long trip coming up, and my old kindle (from 2012) is not working well and I need to replace it.
I have been looking at the paperwhite signature and then recently discovered the wold of BOOX products.
I don't want to spend a ton of money.
I need something compact, that will last, that doesn't use blue light (or can be reduced somehow) and that will take my epub or pdf files as well.
I like the idea of not being stuck with just the kindle store, so I was leaning towards boox, but also saw some ways to jailbreak a kindle. HELP! lol

What do you recommend?